Light Duty and LCV Aftermarket

Timing Belt Kits

The wide range of Timing kits is the reply to the requests coming from a continuously developing market. Maintenance work no longer requires individual items but complete systems, guaranteeing the most reliable replacements. Dayco research in cooperation with all automotive companies allowed us to produce complete systems for all technical and application needs. Timing belt kits meet all technical and application requirements for optimal system operation. All wear parts including belts, rigid components and fasteners can be replaced. Dayco offers a wide range of products that are constantly being updated and developed in line with the evolution of the automotive industry.

Timing kits

Dayco timing belt kits are divided into:

All the range guarantees complete systems and the perfect technical compatibility of the components, for the top quality.

What is included in the Dayco timing kit

  • Components of equivalent quality to the Original Equipment (OE) for both passenger cars and heavy duty vehicles.
  • All transmission components subject to wear (belts, rigid components) and fasteners
  • Continuous update of components according to the instructions of the car manufacturer
  • Clear and comprehensive assembly instructions

It is recommended that all transmission components should always be replaced, thus guaranteeing optimum operation.

Warnings for the correct assembly of the timing belt kit

  • During repairs, it is necessary to be provided with all protective equipment and the precautions required by current regulations must be implemented
  • Replaced substances must be disposed of according to current regulations
    The manufacturer may make modifications to the engine and vehicle without prior notice
  • Always check information is applied correctly
  • Before disassembling the timing chain, check that the engine timing is correct.
  • Also make references with paint to facilitate reassembly
  • Always comply with the direction of rotation of the timing chain and accessory belt, if indicated
  • Always replace loose fasteners

Discover all the codes of timing belt kits by accessing our Dayco Catalog

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Timing Belt-in-Oil Kits (BIO)

The BIO timing kits have been included in the Dayco product line to offer the market a solution for any type of synchronous transmission.

The oil-bath belt, better known as the Belt In Oil (BIO), invented by Dayco in 2007 and awarded for innovation in 2009, has been on the market since September 2014. The BIO system has been a real revolution in the automotive field. By creating a belt able to work inside the engine like a chain (lubricated area), the best of both technologies have been combined, preserving the advantages that the chain guarantees in terms of compactness of the engine architecture and adding synergistically those of the belt transmission.

SECTION OF A BIO BELT

  • a) Resistance insert (E-glass / K-glass / Hybrid)
  • b) Compound body (HNBR, fiber loaded)
  • c) Tooth covering fabric (Nylon HT, Ny+Ar, full Aramid) + PTFE skin
  • d) Back fabric (optional)

Main advantages and features of the BIO Dayco KIT:

  • Use of innovative and cutting-edge materials
  • High robustness and proven reliability on test benches and vehicle fleets
  • Reduced coefficient of friction with relative reduction of energy losses (reduction of consumption and pollution)
  • Optimization of the belt and pulley profile for noise reduction (maximum acoustic comfort)
  • Synergic design of the entire BIO transmission system (belt, guides, tensioners, idler pulleys, pulleys) and not of the single component

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Timing Belt Kits including H.A.T.

For the Complete Solution. Turn to Dayco Timing Belt Kits that also include the Dayco Hydraulic Tensioner for its specified application.

Only Dayco provides you with another solution to bring the vehicle back to the manufacturers specifications. Increases Timing Belt life and reduces noise, maintains correct and constant tension.

All Dayco Timing Belt Kits meet or exceed OEM specifications.

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Timing Belt Kits with Water Pump

Replacing components with the timing kit with water pump guarantees durability and performance of the entire transmission system. The engine cooling system stabilises the engine operating temperature by limiting the rise above the expected limits. The coolant is circulated by the water pump, which must ensure the correct flow at each engine speed. Incorrect operation of the water pump can cause significant damage to the engine. For this reason it is extremely important that it is systematically checked. In many applications, the water pump is controlled by the timing belt. Therefore, its control and any replacement during maintenance to timing control system is extremely important.

The elements of the Timing Kit with Water Pump

The major elements that characterize the quality of Dayco water pump are:

  • The bearing: supports the impeller on one side and the pulley on the other side. This element must ensure constant smoothness and withstand the loads generated by the system. It can be a double ball bearing or single ball bearing (impeller side) and a roller bearing (pulley side). The determination of the bearing geometry is made by the engine manufacturer according to the loads generated by the system.
  • The impeller: can be made of synthetic material reinforced with fibreglass, steel or cast iron. The profile of the impeller blades is important, because it must ensure the correct flow and avoid cavitation effects. The design of the impeller is complex as it ensures constant flow of liquid at all engine speeds.
  • The seal: mounted between the impeller and the bearing. The seal must ensure that the liquid is sealed at all operating temperatures and speeds. The aim is to prevent liquid from entering the bearing and compromising the quality of the grease, damaging the pump.
  • The pump body: generally made of plastic or aluminium. The pump body must guarantee the correct stiffness and geometry of the system.

The other elements

The kit contains the following elements:

  • Timing belt
  • Tensioner
  • Idler pulley
  • Accessory kits

The water pump in the kits is an original equipment derivation pump, offering maximum safety and durability as required by manufacturers.

Discover all the codes of timing kits with water pump by accessing our Dayco Catalog

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Poly-V / Serpentine Belt Kits

Dayco Poly-V / Serpentine Belt Kits have been designed for the most popular applications, ensuring that the end user has all the parts needed to perform a ‘complete’ job.

Continuous research and consistent collaboration with all car manufacturers, has given Dayco the opportunity to create complete systems that meet all technical and application required by the market.

Dayco kits offer OE or equivalent components for both passenger cars and heavy duty vehicles and complete replacement of all stand alone parts (belts and rigid components). Kits are updated according to the vehicle manufacturer’s instructions.

Dayco recommends to always check and replace, when necessary, all drive components, for the best maintenance activity.

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Timing Chain Kits

Dayco’s long tradition of toothed belt power transmission systems and its in-depth knowledge of functional requirements, as well as its know-how in terms of quality, testing and reliability, are also successfully applied to chain kits.

In designing the chain kits, a “system” logic was followed, to ensure all the elements of the kit (chain, hydraulic tensioner, sprockets, guides) were included. Additionally, it is important all elements comply with the technical requirements of the single component. This guarantees maximum functionality, silence and a longer life of the transmission.

Main advantages and features of the Dayco chain KITS:

  • Synergic design of the entire KIT (chain, guides, tensioner, gears, seals)
  • High robustness and proven reliability on test benches and vehicle fleets

Use of the best technologies available today:

  • Chains: use of high-strength steel and know-how of the various types of chain used in the automotive sector:
  • Tensioners: precision machining in order to obtain reduced internal clearances for the best control and optimal management of the chain tension
  • Guides: use of high-strength plastics loaded with glass fibres
  • Gears: high-strength moulding steel or sintered steel, both with specific heat treatments for surface hardening of the toothed areas

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Poly-V / Serpentine Belts

The Poly-V belts are produced for auxiliary transmissions of cars, commercial vehicles, heavy duty vehicles and buses. Service belts control almost all auxiliary systems. They have very important functions controlling the correct operation of

  • The climate control compressor
  • The power steering pump
  • In some cases even the water pump
  • The alternator

The Poly-V belt and the A/C compressor

The Poly-V belt, with a pulley system, powers the air temperature control system compressor. Its task is to compress the coolant gas circulating within the air temperature control system. It is recommended to always keep the service belt in perfect working order, especially in summer. The functioning of the air temperature control system also depends on this.

The Poly-V belt and the power steering pump

The Poly-V belt powers the power steering pump. The latter is present in almost all cars, ensuring smoother and safer driving. A malfunctioning service belt can make the steering system barely manoeuvrable, compromising the safety of all passengers on board.

The Poly-V belt and the water pump
On some types of cars, the service belt operates the water pump, ensuring the circulation of coolant within the cooling circuit. Thanks to the water pump, the engine and its components can remain at an optimal temperature. Without it, the engine would emit very high temperatures, causing malfunctions.

The Poly-V belt and the alternator operation

The main characteristic of the Poly-V belt is that it powers the alternator by recharging the battery that operates:

  • Starting of the engine
  • The dashboard control panel
  • The headlights
  • The electric windows
  • The air temperature control system.

Materials

Dayco Poly-V belts are all made of EPDM (Ethylene-Propylene-Diene-Monomer) and guarantee:

  • Excellent resistance
  • Reliability
  • Silent operation
  • Long service life.

Main features of the Poly-V belts:

  • Highly flexible for use on small diameter pulleys
  • Power transmission also with the back of the service belts, in the case of the “DPK” (Double Poly-V)
  • Resistance to high operating temperatures for longer service life
  • Managing high workloads while maintaining consistently high performance

Poly-V replacement

Replacing the Poly-V belt requires technical equipment and vehicle knowledge typical of technicians or those who know mechanics. Attention must be paid to the correct tension to be applied to the service belt and the correct positioning on the pulleys. In any case, the best is to turn to a trusted mechanical technician. For this type of operation, it remains the best choice.

Discover all the codes of the service belt range by accessing our Dayco Catalog.

Download the service belt brochure here.

Or contact us here.

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Ela Poly-V Belts

Ela belts, also known as “stretch” belts,  are specifically designed for 2 to 4 point drives that do not require tensioning. Although these belts may look like standard Poly-V / Poly-V Serpentine belts, they are very different. These specially designed belts have self-tensioning capabilities required by specific original equipment (OE) drives designed for a “stretch” belt. Vehicles that are manufactured with “stretch” belts must replace those belts with “stretch” belts. These belts are not interchangeable with standard constructed belts of the same size.

Ela belts utilize a proprietary EPDM construction that is designed to elongate over the fixed pulley system, and then maintain the required belt tension over the life of the belt. The backbone behind the Ela belt is its specially developed polyamide tensile member, which allows for high elongation required for installation, yet provides the proper tension maintenance properties to transmit the accessory loads demanded for the drive. This belt construction incorporates a wear resistant EPDM rib material, along with a highly elastic EPDM cushion rubber that surrounds the polyamide tensile cord, thus providing the required adhesion and flexibility to maintain lasting performance.

“Stretch” belts have unique installation instructions depending on the OE application. Installation may require a specialized tool for the application or a simple zip tie. Do not attempt to install by prying the belt on the pulleys.

Dismounting and reusing stretch belts is not recommended. A new belt should be installed anytime one is removed.

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Timing Belts

Timing belts are designed for diesel engines and for petrol engines as well; they are installed on passenger vehicles and commercial vehicles. Belts can be manufactured with different tooth structures and profiles to meet the performance of modern engines.

Properties

Today, car belts are subjected to stresses and working conditions that a few years ago seemed unthinkable:

  • High diesel injection pressure where in some applications it exceeds 2000 bar
  • High stress on multi-valve engines with double camshafts
  • Engines with high power and engine compartment temperatures above 120°C/250°F

Quality of timing belts

Some characteristics of the timing belt:

  • Noise reduction
  • Minimum dimensional tolerances
  • Reduced elongation
  • High abrasion resistance of the cover fabric on the teeth
  • Superior duration and longer performance

Timing belt range

Dayco offers a wide range of timing belt solutions on the market:

  • NR: first-generation timing belt, with reduced work loads and thermal stresses (working temperatures 80°C-90°C/175°F-195°F).
  • HSN: they offer superior resistance to high working temperatures (even up to 110°C/230°F) and pulsating loads.
  • HDT: they are designed for particularly demanding and heavy duty applications. To increase the lateral wear resistance they are equipped with a special fabric on the back withstanding temperatures up to 115°C/240°F.
  • HT: with tooth fabric coated with a PTFE film (highly abrasion-resistant material). They were designed to minimise wear on the tooth fabric. They are mainly used on the latest generation diesel engines with high injection pressures. They guarantee maximum belt life on engines, withstanding temperatures up to 120°C/250°F.
  • HK: the latest generation product, equipped with aramid-based fibres for superior durability and silent operation. They can withstand temperatures up to 120°C/250°F.
  • BIO: timing belt designed to work in an oil bath. They withstand the action of additives and high engine oil temperatures.

Discover all the codes of timing belts by accessing our Dayco Catalog

Or contact us here.

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V-Belts

V-belts have a trapezoidal section with edges cut and are highly performing. The V-belt is one of the many components that make up the transmission system of any car. The task of V-belts is to transmit the rotary motion of the crankshaft to auxiliary units such as:

  • The alternator
  • The A/C compressor
  • The water pump

The V-belt range

Dayco V-belts are all made of high-quality materials. They come in the following types:

  • AV10
  • AV13
  • AV17

Dayco V-belts guarantees

  • Excellent resistance to repeated flexing
  • Low weight
  • Use on small diameter pulleys
  • High transmission ratios
  • Greater friction, less slippage
  • Energy saving
  • Longer belt life
  • Good resistance to heat
  • High friction coefficient
  • Good resistance to oils, greases, chemicals and ozone

Warning

The V-belt is subject to an ageing process, too, which makes regular replacement of this component necessary. For this reason, it is recommended to consider the replacement intervals set by the manufacturer of your vehicle. Furthermore, it is always best to carry out regular checks to guard against inconveniences related to a poorly performing belt.

Discover all the codes of V-belts by accessing our Dayco Catalog

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Water Pumps

Improper functioning of the water pump can cause engine damage, so it is important that it is checked systematically.

The engine cooling system stabilises the engine operating temperature by limiting the rise above the expected limits. The coolant is circulated by the water pump, guaranteeing the correct flow at each engine speed.

In many applications, the water pump is controlled by the timing belt. Therefore, its control and any replacement during maintenance to timing control system is extremely important.

Main features of the water pump

The major elements that characterize the quality of Dayco water pump are:

The bearing

  • It supports the water pump impeller on one side and the pulley on the other.
  • This element must ensure constant smoothness and withstand the loads generated by the system.
  • It can be a double ball bearing or a ball bearing (impeller side) and a roller bearing (pulley side).
  • The determination of the bearing geometry is made by the engine manufacturer according to the loads generated by the system.

The impeller

  • It can be made of synthetic material reinforced with fibreglass, steel or cast iron.
  • The profile of the water pump impeller blades is crucial. The blades must ensure proper flow and avoid cavitation effects.
  • The design of the impeller is complex as it constantly ensures liquid flow at all engine speeds.

The seal

  • Fitted between the impeller and the bearing, it guarantees the sealing of the liquid at all operating temperatures.
  • The seal prevents liquid from entering the bearing, thus preventing irreversible damage to the water pump.

The pump body

  • Generally made of plastic or aluminium, depending on the manufacturer’s choice.
  • The pump body must guarantee the correct stiffness and geometry of the system.

Discover all the codes of the water pump range by accessing our Dayco Catalog.

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Electric Water Pumps

The Dayco car electric water pump achieves the following:

  • fuel economy
  • emissions reduction
  • engine efficiency improvement
  • better control of energy consumption.

It is now an indispensable element in maintaining the optimal functioning of the cooling system.
The conventional water pump is driven by the belt: the higher the revs, the more water circulates in the system.
To manage the circulation, a thermostat closes or opens the system depending on the temperature.

More and more engines will be equipped with electric water pump solutions, either as main pump or additional water pump. In hybrid vehicles, the car electric water pump also cools the high-voltage inverter.

With the car electric water pump the coolant adjustment is electronically managed.
The pump will be activated in the event of a specific requirement.

Why choose the Dayco electric water pump:

  • World leader in automotive technology for over 110 years
  • Dayco quality in line with OE standards.
  • Designed for the aftermarket, tested in accordance with OE requirements.
  • Perfect installation
  • Wide range of car electric water pump codes, continuously developed according to market needs

Types of car electric water pump:

Additional electric water pump
The Dayco additional electric water pump now has a wide application for cooling:

  • stop-start systems
  • after-run and turbochargers
  • inverters and battery packs in modern electric and hybrid vehicles.

In newer vehicles, up to four electric water pumps are possible.

Main electric water pump
Main characteristics:

  • Greatly improves engine cooling control
  • Provides more power and improved fuel economy
  • The Dayco car electric water pump can provide extra power and torque.

Discover all the codes of the electric water pump range by accessing our Dayco Catalog.

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Thermostats

Dayco car thermostat is a key component of the vehicle cooling system. It optimises the flow of coolant from the radiator when the engine is cold to reach the ideal temperature quickly.

Dayco car thermostat has been designed to control the overheating of any type of engine, meeting three basic needs:

Reduced fuel consumption

  • Modern cooling systems give a fundamental contribution to reducing consumption. Dayco car thermostat is a key component in this process.
  • It helps the efficiency of the vehicle, while also supporting the entire technological system.
  • Independent heating and air conditioning systems have transformed conventional engine cooling into complex cooling systems.

Lower emissions:

  • To meet future emission control regulations, the working temperature range must be increased by about 10%. All this is made possible by the thermostat.
  • Dayco car thermostat ensures optimal engine combustion.
  • Higher temperature also means more cooling power, so that the engine can cover its mileage without any problems.

Remarkable reduction in wear and tear:

  • An efficient cooling system is one of the factors in limiting engine wear. Without effective temperature control it would not be possible to avoid increasing wear and following damage to engine components.
  • Know-how and technological expertise made it possible to produce thermostats equivalent to OE parts in terms of properties, safety, efficiency and durability.

Standard car thermostat:

  • The main plate of the thermostat is made of seamless steel for greater reliability and durability over time.
  • Unique valve technology prevents thermal shocks to protect the entire cooling system.
  • The car thermostat bulb is made with new wax-aluminium or wax-copper mixtures to ensure extremely precise activation temperatures.

Complete car thermostat:

  • The Dayco car thermostat is made from polyamide or aluminium resins, guaranteeing heat resistance and total impermeability.
  • Housings are individually checked in production to verify perfect sealing and total absence of leaks.
  • Geometric and dimensional precision of the thermostat guarantees perfect coupling with the hydraulics or other components of the cooling system.
  • The electronic sensors perfectly measure the temperature of the coolant with response times equal to the OE part.
  • The valves are actuated directly by the car’s ECU and allow for a ‘smart’ management to reduce fuel consumption and improve performance.

Why choose a Dayco car thermostat

  • Dayco has been world leader in automotive technology for over 110 years.
  • Supplier of the world’s leading brands on all continents.
  • Wide range of car thermostats, in continuous expansion, providing more than 80% of the circulating fleet.
  • New packaging that enhances the technology of the product.
  • On-line and paper catalogues for quick and secure identification of the Dayco product for your application.
  • Quality products equivalent to Original Equipment.

 

Discover all parts of thermostat range by accessing our Dayco Catalog.

For more information, please download our thermostat brochure.

Or contact us here.

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Radiator Caps

Dayco radiator and expansion tank caps:

Quality at Your Service

The Dayco Radiator Cap range has been developed to complement our diverse cooling products range.

  • Our new radiator and expansion tank caps range have been developed to comply with the strictest OE system
  • Dayco radiator caps guarantee high performance having a significant role as a vital part of the vehicle cooling system
  • Throughout the entire quality process, Dayco is constantly improving products and operations

The function of Dayco radiator cap:

  • To ensure constant working pressure in the cooling system managing volume variations
  • To Prevent air from entering the system that can cause temperature spikes and overheating
  • The cap allows coolant to go to the recovery tank when it gets hot, expands and pressures increase

Closed system

The closed system requires an expansion tank sealed by a pressurized cap.
Dayco coolant expansion tank caps provide an excellent replacement for worn or faulty caps.

Open system

In open system cap is mounted directly on the radiator and an overflow tube extends for draw back. Metal radiator pressure caps are designed and manufactured to offer precise pressure control for the automotive cooling system.

Please refer to Dayco’s product application listings or catalogs to ensure the correct item is selected.

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Coolant Expansion Tanks

The expansion tank is more complex as it is always under pressure, the pressure cap is located on this tank rather than the radiator itself. Typically the expansion tank is at the highest point in the cooling system with the coolant being continuously cycled through the tank, here the pressure released from the hot coolant fills the top half of the tank and acts as a force to push the coolant back into the system.

Tanks will often become discoloured, brittle, contaminated with sludge or even break requiring immediate replacement for the cooling system to continue effective operation.

Dayco Expansion Tanks are made to OE specifications and are make/model specific.

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Coolant Overflow Tanks

The overflow tank or recovery tank is used to recover the coolant that escapes the cooling system past the pressure cap due to rising pressure and temperature, in a properly operating cooling system, the coolant will then be siphoned back into the radiator as the temperature drops.

Tanks will often become discoloured, brittle, contaminated with sludge or even break requiring immediate replacement for the cooling system to continue effective operation.

Dayco Overflow Tanks are made to OE specifications and are make/model specific.

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Heater Tap Control Valves

The purpose of the Heater Control Valve is to regulate the flow of coolant to the heater core. In the off position the heater valve blocks coolant flow to the heater core hence when no heating is required and the reverse when heating inside the vehicle is needed. The heater valve can be activated by vacuum control in late model vehicles and cable in earlier models.

Common failures include leakage, blocking and because most late model valves are made of polymer, cracking when removing heater hoses is common. Dayco have released a quality aftermarket program targeted at local and imported vehicles.

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Fan Clutches

Dayco Fan Clutches are die-cast aluminium and have a machined body that helps to provide for a tight fit within close tolerances, while producing precision performance. Deep fins increase surface area for improved heat dissipation, while exclusive drive spines are knurled and burnished.

The shaft surface resists slippage caused by heavy torque loads and assures longer bearing life. Top-quality bearings ensure longer life and quiet, smooth running. A special silicone fluid inhibits heat build-up to prolong service life. A bi-metal thermostatic spring adjusts the fan speed in response to operating temperature requirements – reducing fuel consumption.

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Molded Radiator and Bypass Hoses

Designed to replace OEM hoses on today’s light duty vehicles for superior performance.

The Dayco molded radiator and by-pass hose features knitted reinforcement, a protective sleeve and a synthetic EPDM rubber construction for high strength performance, protection against abrasion and resistance to oil, mud, salt, road debris, ozone and coolants. It can also withstand temperature variations of -40°F (-40°C) to +257°F (+125°C). The inner base tube is reinforced with knitted rayon for maximum strength and burst resistance for the life of the hose. In addition to meeting SAE J20R4, Class D-1 requirements, this hose also meets Type EC electro-chemical requirements as specified in SAE J1684, which prevents inner tube deterioration caused by the build-up of static electric charges.

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Branched Radiator Hoses

Designed as an aftermarket replacement for OEM manufactured branched cooling system hoses.

The Dayco branched radiator hose features an all EPDM construction that resists the effects of oil, mud, salt and ozone, and a knitted rayon reinforced inner tube that stands up to temperature ranges of -40˚F (-40˚C) to +257˚F (+125˚C). With leak-proof junctions that ensure long service life and unrestricted flow, this branched hose meets SAE J20R4, Class D-1, Type EC electro-chemical requirements as specified in SAE J1684.

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Small I.D. Molded Heater Hoses

Designed to replace OEM coolant hose and provide long, reliable service in applications where molded hoses in small diameters are required.

Made with the same bends and routing as the OEM assembly, this molded hose is designed to fit the vehicle precisely. The knitted reinforcement and synthetic EPDM construction provide high strength performance and resistance to detrimental environmental elements, coolants and temperature variations of -40°F (-40°C) to +257°F (+125°C) and the “quick connect” end allows for fast, convenient installation. In addition to meeting SAE J20R3, Class D-1 requirements, the Dayco small I.D. molded heater hose is designed to meet Type EC electro-chemical requirements as specified in SAE J1684.

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90° Molded Coolant Hoses

Designed for vehicles that require special heater hoses with a molded 90° elbow to fit tight engine compartment routings. Multiple 90° hoses can be used with Dayco plastic connectors to fit complex routings.

The Dayco 90° molded coolant hose features knitted reinforcement and EPDM compounds for high strength construction and resistance to oil, mud, salt, road debris, ozone, coolants and temperature variations of -40°F (-40°C) to +257°F (+125°C). The inner base tube is reinforced with knitted rayon for maximum strength and burst resistance for the life of the hose. In addition to meeting SAE J20R4, Class D-1 requirements, this hose meets Type EC electro-chemical requirements as specified in SAE J1684.

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Flex Radiator Hoses

Designed to replace straight or molded radiator hoses on a wide range of engine applications.

Precision molded in standard lengths, the Dayco flex radiator hose features a knitted reinforcement and synthetic EPDM construction that meets SAE J20R4, Class D-2 requirements. This hose is designed to prevent splitting, ballooning and elongation as well as resists ozone and other detrimental environmental elements, coolants and temperature variations of -40°F (-40°C) to +257°F (+125°C). With corrugations that provide excellent hose flexibility without flattening or collapsing, the Dayco flex radiator hose also features a helical steel coil spring for increased flexibility.
*NOT suitable for fuel or oil transfer.

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Straight Radiator Hoses

Designed for a wide range of light vehicle applications where the radiator hose routing is relatively straight.

The Dayco straight radiator hose features knitted reinforcement and synthetic EPDM rubber construction. It meets SAE J20R4, Class D-2 requirements and provides high strength performance and resistance to detrimental environmental elements, such as ozone, coolants and temperature variations from -40°F (-40°C) to +257°F (+125°C).

*NOT suitable for fuel or oil transfer.

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Standard Heater Hoses

Made for general service on light trucks and passenger cars and compatible with all common coolants and coolant additives.

Designed to carry heated coolant from the engine block to the heater core and return it to the engine, the Dayco standard heater hose is constructed with EPDM compounds and a spiral reinforcement for high burst strength and excellent heat resistance. Similar to SAE 20R3, Class D-2, it has a temperature rating of -40°F (-40°C) to +257°F (+125°C).

*NOT suitable for fuel or oil transfer

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Insulone® Heater Hoses

Designed for use in cold climate applications where efficient heat transfer is important for comfortable and cost-effective vehicle operation.

The premium Dayco Insulone® heater hose delivers heated coolant to the heater core with minimal heat loss. The synthetic EPDM rubber compounds and spiral reinforcement give this hose excellent burst strength, resistance to heat and compatibility with all common coolants and coolant additives. A special compound used in the insulating layer provides an added measure of protection against heat loss. Built with a black cover, this hose meets SAE 20R3, Class D-2 with a temperature range of -40°F (-40°C) to +257°F (+125°C).

*NOT suitable for fuel or oil transfer

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Special Reducers

Designed to reduce the inside diameters of larger hoses for emergency replacements in coolant or air applications.

These molded rubber Dayco special reducers slip into the end of straight radiator hoses to reduce the I.D. of existing straight, molded and flex hoses to help provide a tight, leak proof connection.

*NOT suitable for fuel or oil transfer

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Heater Hoses Packaged 6-Foot

Designed to hang on standard pegboard hooks for retail displays and self-service stations.

This pack contains each of the three most popular Dayco heater hose sizes – ½”, ⅝”, ¾” – packaged in 6′ lengths in a poly bag that measures 12″ wide x 17″ high. Ships 10 bags per standard case.

*NOT suitable for fuel or oil transfer.

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Vehicle Hose Packs

Replace One, Replace All.

Dayco encourage the replacement of all major hoses within the cooling system.

Dayco’s extensive range of Vehicle Hose Packs cover most common vehicles.

Designed to replace original equipment manufacturer hose, Dayco Moulded Radiator, Heater and Bypass Hose are built with knitted reinforcement and EPDM construction which provides high strength and resistance to oil, mud, salt, road debris, ozone, coolants, and temperature variations of -40˚F (-40˚C)to +257˚F (+125˚C) that are required for OEM hose replacements.

In addition to meeting SAE J20R4,Class D-1 requirements, these hoses are now designed to meet Type EC electro- chemical requirements as specified in SAE J1684.

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Plastic Heater Hose Connectors

Designed for making various replacement heater hose configurations, accommodating ¼”, ⅜”, ½”, ⅝” and ¾” hose I.D.s. and compatible with all traditional coolants and fuels.

These glass-filled nylon connectors feature a unique barbed end profile to ensure a leak-proof seal and anti-rotation ribs molded directly into the connector to prevent hose rotation and twisting. A circumferential flange provides a hose stop that ensures the hose is inserted to the proper depth. Dayco plastic heater hose connectors are available in straight, “Y”, elbow, tee and reducing configurations.

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Barrier Refrigerant Hoses Style DBH

Designed for use with R12 and R134A refrigerant systems only, the Dayco Style BH/DBH Barrier Refrigerant Hose features nitrile/nylon barrier/neoprene tube construction, , textile reinforcement, and black EPDM cover that is resistant to abrasion, ozone, and heat. It meets SAE J2064 (exceeds J51) type C requirements. The temperature range is from -22˚ F to +203˚ F. This hose is recommended for use with Dayco coupling styles BL and SB.

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Power Brake Vacuum Hoses

The Dayco Power Brake Vacuum Hose, designed for use on power brake vacuum hose applications, features a tough outer cover and a braided reinforcement for increased strength and durability. The hose is supplied without couplings and it is recommended that hose clamps be used. This hose meets SAE J1403a, Type L, Class B and DOT FMVSS 106 requirements, and resists temperature extremes of -40˚F (-40˚C) to +257˚F (+125˚C).

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Air Intake Hoses

Dayco Air Intake Hose range is manufactured to OEM specifications and are make/model specific.

The purpose of the air intake system is to provide clean, cool and dry air for the engine.

The Air Intake Hose is an important component within the Air Intake System, the Hose delivers fresh filtered air to the combustion chamber.
The Air Intake Hose is durable, however, fuel economy and the overall performance of a vehicle can be affected significantly when cracks and wear become evident.
To ensure continual engine efficiency Dayco recommends the damaged Air Intake Hose be replaced immediately.

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Radiator Overflow Hoses

Designed to replace worn Radiator overflow hose, as well as general coolant applications. This low pressure non reinforced hose is made from EPDM, providing resistance to coolant additives, ozone & heat.

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Water Universal 45° Hose Bends

Dayco 45° Universal Hose Bends for water are suitable for automotive coolant applications. Manufactured from electrochemical degradation resistant EPDM rubber with fibre reinforcement and an EPDM outer offering Ozone and heat resistance.

  • Meets or exceeds SAE specifications J20R4
  • Working Temperature Range: -40°C to 125°C

Note: NOT suitable for Fuel, Oil or Brake Fluid applications

Europe market: Packaging environmental labelling

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Water Universal 90° Hose Bends

Dayco Universal 90° Hose Bends for water are suitable for automotive coolant applications. Manufactured from electrochemical degradation resistant EPDM rubber with fibre reinforcement and an EPDM outer offering Ozone and heat resistance.

  • Size 8mm to 19mm meets or exceeds SAE specifications J20R3
  • Size 25mm to 63mm meets or exceeds SAE specifications J20R4
  • Working Temperature Range: -40°C to 125°C

Note: NOT suitable for Fuel, Oil or Brake Fluid applications.

Europe market: Packaging environmental labelling

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Water Universal S Hose Bends

Dayco Universal S Hose Bends are specially designed to provide the largest small bore applications from just a few part numbers offering maximum coverage. These hoses are flexible through a wide range of angles and planes ensuring multi-fit applications.

Dayco Universal S Hose Bends for Water are manufactured from heat resistant EPDM and meets SAE20R3 specification and SAE20R4 for the larger 25mm ID bore.

Note: NOT suitable for Fuel, Oil or Brake Fluid applications.

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Blanking Caps

Designed to block flow to heater & other coolant applications.

Dayco’s blanking caps are made for general service on light trucks and passenger cars. Constructed using all EPDM compounds for strength and excellent heat resistance.

Note: NOT suitable for fuel or oil transfer.

Europe market: Packaging environmental labelling

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Fuel Line Hoses

Designed for use on all types of carbureted gasoline engines – with leaded, unleaded and diesel fuel – that are exempt from CARB or EPA requirements.

The Dayco fuel line hose offers excellent resistance to oil, gasoline, grease and environmental elements. Constructed with a neoprene cover and nitrile tube that’s reinforced with a single ply of braided cord, the Dayco fuel line hose meets SAE J30R7 requirements and the fuel permeation requirements of SAE J1527 Type 2, Class B specifications. This hose specification should be used only on vehicles exempt from EPA and CARB emission regulations.

*NOT suitable for gasoline/oil mixed fuels, alcohol blended fuel, or bio-diesel fuel.

*NOT suitable for fuel injection systems.

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DAYPERM™ Hoses

Ideally suited for automotive, lawn and garden, off-road and small industrial trucks, and truck fleet applications and compatible with leaded, unleaded, diesel and gasohol fuels for use at 50 psi or less.

Designed for stringent emission control requirements, the Dayco Dayperm® hose is a multi-layered rubber hose with low permeation. It’s recommended for a fuel liquid or vapor carrying component at low to medium pressure. With approval in the California market under Component Executive Order C-U-06-030, this hose meets SAE30R11 specifications as well as SAE 30R7 pressure requirements and should be used in place of conventional 30R7 for gasohol and oil/gas mixes.

*NOT suitable for bio-diesel or fuel injection systems.

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DAYPERM™ II Hoses

Recommended for carburation applications on small engines and older carbureted vehicles using liquid fuels such as leaded, unleaded, gasohol, bio-diesel fuel and ethanol blended gasoline.

The Dayco Dayperm® II hose is a multi-layered rubber hose with low permeation that meets all SAE J30R14T2 requirements and is CARB and EPA compliant. The fuel injection hose is constructed with a tough fluoro-elastomer, low permeation, gasohol and diesel fuel inner tube that provides exceptional resistance to alcohol blended fuels that weaken normal fuel injection hose. A special braided reinforcement delivers a recommended working pressure of 100 psi, with a burst strength of 900 psi. The abrasion-resistant outer cover resists temperature extremes of -30˚F (-34.5˚C) to +300˚F (+149˚C) as well as oil, grease, ozone and coolants. The Dayco Dayperm II hose also meets SAE J30R14T2 and CARB 2020 requirements (EO#Q-19-156).

*Suitable for diesel and bio-diesel fuel.

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Fuel Injection Hoses

Designed to safely and efficiently handle the higher pressure, temperatures, and chemical problems inherent in today’s hotter running, fuel injected engines, the Dayco Fuel Injection Hose is constructed with a tough fluoro-elastomer, low permeation, gasohol and diesel fuel inner tube that provides exceptional resistance to alcohol blended fuels that weaken normal fuel injection hose.

A special braided reinforcement delivers a recommended working pressure of 100 psi, with a burst strength of 900 psi. The abrasion-resistant outer cover resists temperature extremes of -30˚F (-34.5˚C) to +300˚F (+149˚C) as well as oil, grease, ozone, and coolants. Dayco Fuel Injection Hose meets SAE J30R9 and meets CARB requirements (EO#C-U-05-002). For easy and attractive merchandising, this hose is available in 18” clamshell packs.

Note: Suitable for diesel and bio-diesel fuel.

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In-Tank Fuel Line Hoses

The Dayco In-Tank Fuel Line Hose is capable of handling gasoline, alcohol blended gasoline or diesel fuel used in mobile and stationary applications. Designed for use in fuel injection systems where the hose may be submerged in the fuel tank, this hose has a maximum working pressure of 0.69 MPa (100 psi) and is suitable for use in normal operating temperatures of -29˚ F (-34˚C) to 212˚ F to (100˚C) and intermittent use at 257˚ F (125˚C). This Dayco In-Tank Fuel Line Hose also meets SAE J30R10 requirements.

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Emissions Control / Fuel Vapour & Vacuum Hoses

Dayco’s Emissions Control, Fuel Vapour & Vacuum Hose is manufactured to OE specifications.

The hose is constructed of a non-reinforced Nitrile/PVC (NBR/PVC) rubber tube that gives resistance to crankcase fumes, Petrol, Diesel & Ethanol vapour while also providing protection against the aging effects of heat and ozone degradation. Hose is suitable for emissions control, fuel vapour and vacuum applications.
Working Temperature Range -34°C to 125°C (-29°F – 257°F).

Note: NOT suitable for fuel, oil, coolant or brake fluid applications.

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Fuel Filler Hoses

Designed to connect the filler neck to the fuel tank on cars, light trucks and boats as well as auxiliary fuel tanks on RVs that use leaded, unleaded, diesel, gasohol and oxygenated fuels.

The Dayco fuel filler hose is designed to connect the filler neck to the fuel tank on cars, light trucks and boats as well as auxiliary fuel tanks on RVs. Supplied in 3′ lengths, this hose has a rugged, double reinforced construction that helps prevent hose collapse and meets SAE J30R7 and SAE J1527, Style R2 requirements.

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Fuel & Oil Universal 45° Hose Bends

Manufactured with an OE grade Nitrile/PVC blended rubber tube with knitted high tensile strength Para-Aramid fibre to give maximum burst protection.

Suitable for Fuel Filler and Turbo Intercooler applications
Working Temperature Range : -34°C to 100°C
Exceeds Fuel Hose SAE specification J30R6

Hose suitable for use with leaded and unleaded petrol, Ethanol blended fuels up to E85, Diesel & Bio-diesel fuels, lubricating oil as well as crankcase and fuel vapour applications.

Note: NOT suitable for Fuel injection, in-tank fuel submersion, coolant or brake fluid or any marine applications.

Europe market: Packaging environmental labelling

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Fuel & Oil Universal 90° Hose Bends

Manufactured with 2 constructions depending on size.
8mm to 19mm is manufactured from (NBR) Nitrile Rubber tube with a Polyester fibre reinforcement using an oil-resistant Hypalon© rubber outer for heat and ozone protection 25mm to 63mm is manufactured with an OE grade Nitrile/PVC blended rubber tube with knitted high tensile strength Para-Aramid fibre to give maximum burst protection.

  • Sizes 8mm to 19mm are suitable for low pressure fuel applications
  • Sizes 25mm to 63mm ID are suitable for Fuel Filler and Turbo Intercooler applications
  • Working Temperature Range : -34°C to 100°C
  • Exceeds Fuel Hose SAE specification J30R6

Hose suitable for use with leaded and unleaded petrol, Ethanol blended fuels up to E85, Diesel & Bio-diesel fuels, lubricating oil as well as crankcase and fuel vapour applications.

Note: NOT suitable for Fuel injection, in tank fuel submersion, coolant or brake fluid or any Marine applications.

Europe market: Packaging environmental labelling

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Fuel & Oil Universal S Hose Bends

Dayco Universal S Hose Bends are specially designed to provide the largest small bore applications from just a few part numbers offering maximum coverage.
Flexible through a wide range of angles and planes ensuring multi-fit applications.

Dayco Universal S Hose Bends are suitable for Low-Pressure Fuel and Oil applications, manufactured from Fuel resistant (NBR) Nitrile, meets SAE30R6 specification.

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Fuel & Oil Universal Straight Hoses

Dayco Universal straight Hose for Fuel are made from Fuel resistant Nitrile.
Sizes 25mm to 63mm ID are suitable for Fuel Filler and Turbo Intercooler applications and are manufactured with an OE grade Nitrile/PVC (NBR/PVC) blended rubber tube and cover selected for its Fuel, Oil plus Ozone resistance, with a knitted high tensile strength Para Aramid-fibre to give Maximum Protection.

Hoses suitable for use with leaded and unleaded petrol, Ethanol blended fuels up to E85, Diesel & Bio-diesel fuels, lubricating oil as well as crankcase and fuel vapour applications.

Working Temperature Range: -34°C to 100°C

Note: NOT suitable for Fuel injection, in-tank fuel submersion, coolant or brake fluid or any Marine applications.

Europe market: Packaging environmental labelling

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Transmission Oil Cooler/Power Steering Return Line Hoses

Designed to connect the transmission in light vehicles to an external cooler or as a return line between the power steering mechanism and the hydraulic pump.

Dayco’s transmission oil cooler/power steering return line hose has a synthetic rubber tube and cover to resist oil, ozone and aging due to heat. Reinforced with braided cord for increased strength, this hose has a working pressure of 250 psi. It is designed to handle transmission oil temperatures up to +257 F (+125 C) and is similar to SAE J189 type hose.

*NOT suitable for power steering pressure lines.

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Anti-Smog/PCV Hoses

Designed for vehicle applications where petroleum vapors and blow‐by gases are recirculated through the intake manifold for reduced emissions, and on gasoline engines for fuel line applications.

The Dayco anti‐smog/PCV hose features a tube and cover compound that resists oil and helps reduce emissions to acceptable EPA levels. The single ply of cord reinforcement provides increased strength and flexibility. Meeting SAE J30R7 requirements, the Dayco anti‐smog/PCV hose is available in either 50′ cartons or 20″ clamshell packs for ease of merchandising.

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Windshield Washer/Vacuum Tubing

Designed to replace worn windshield washer tubing, as well as general automotive vacuum applications such as retractable headlights, sensors and more.

The Dayco windshield washer/vacuum tubing features a flexible, long‐life rubber construction that resists oil, grease and heat deterioration. It can also remain flexible at low temperatures with a temperature rating of ‐40 F (‐40 C) to +212 F (+100 C). This tubing meets the material specification for SAE J1037 and is available in either 6′ clamshell packs or 50′ spools, for dispensing the exact length needed.

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Emission Control Carburetor Pre-Heater Duct Hoses

Designed to connect the air cleaner to the exhaust manifold to prevent carburetor icing in cold weather.

The Dayco emission control carburetor pre‐heater duct hose features a heavy-duty, flexible aluminum core and corrugated construction that can easily be cut with a sharp knife to facilitate the proper fit between air cleaner and exhaust manifold. The close inside diameter tolerance provides a tight fit to reduce carburetor icing.

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Autoflex® Defroster Duct Hoses

Designed for all under‐dash air connections, hot or cold, including defroster vents and fresh air intakes.

The Dayco Autoflex defroster duct hose is made with tough, lightweight and flexible reinforced vinyl. The hose can be installed in minutes and can be clamped or taped to existing fittings. Available in 15 I.D. sizes, it services a wide range of applications. Individually boxed 6′ lengths are compressed to 28″ per box for easy stocking.

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Multi-Purpose Hoses

Designed to handle air, water service and agricultural chemicals up to 200 psi.

Dayco’s multi‐purpose hose and its cover are constructed of EPDM to resist heat, sunlight, ozone and weathering. The two‐ply reinforcement provides strength and resistance to kinking. This hose exceeds RMA Class C medium oil resistance requirements and is able to withstand temperature variations of ‐40 F (‐40 C) to +212 F (+100 C).

*NOT suitable for the transfer of petroleum products, steam, paint spray, unleaded gasoline, anhydrous ammonia or LP gas service.

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Premium Multi-Purpose Hoses

Designed to transmit air, water, oil and chemicals in service up to 300 psi in a variety of applications requiring the transmission of air, water, oil or chemicals.

The Dayco premium multi‐purpose hose consists of a nitrile tube, neoprene cover and two‐ply textile reinforcement. Providing long lasting service, the Dayco premium multi‐purpose hose features a tube compounded to deliver maximum oil resistance. In addition, the hose has been designed to withstand temperature variations of ‐20˚F (‐29˚C) to +212˚F (+100˚C) and is electrically nonconductive with a minimum resistance of one megohm per inch at 1,000 volts DC.

*NOT suitable for steam, paint spray, gasoline, anhydrous ammonia or LP gas service.
*NOT suitable for hot, dry air applications.

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Plastic Fuel Line and Vacuum Tubing Connectors

Developed as a splice between vacuum line tubing, fuel line hoses, coolant hoses, or other small I.D. hoses and is ideally suited for all jobs requiring ³⁄₃₂”, ¹⁄₈”, ⁵⁄₃₂” and ³⁄₁₆” I.D. connections.

These Dayco glass‐filled nylon, straight, “Y”, elbow, tee and reducing connectors produce a leak‐proof splice for various hose connections. A molded circumferential flange provides a hose stop that ensures that it is inserted to the proper depth. The connectors are packaged and sold in poly bags, one per package.

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Hose Clamps for Automotive and Fleet Applications

Designed for automotive and fleet applications where clamping of hoses is required, all Dayco hose clamps feature a heavy-duty worm gear with stainless steel band and housing. Their four piece design and arched band slots provide added strength and smooth operation.

Product offerings include “Standard” clamps with a zinc plated, slotted, hex head screw; “All Stainless Steel” clamps, featuring a 410 grade, slotted hex head screw; “High Torque” clamps with an extra wide band, all stainless steel super heavy-duty construction, and a 410 grade, slotted hex head screw; and “Silicone” clamps (for use on silicone hoses) with an extended inner liner that covers the band slots to prevent hose damage, and a yellow zinc plated, slotted, hex head screw.

Series 91004 through 91188:
Standard clamps featuring zinc dichromate plated slotted hex head screws.

Series 92004 through 92104:
All stainless steel clamps featuring 410 grade slotted hex head screws.

Series 92208 through 92248:
For Use on Silicone Hose
Silicone clamps with extended inner liner covering band slots to prevent hose damage featuring zinc dichromate plated slotted hex head screws.

Series 92302 through 92305:
Hi-Torque
Extra wide band, all stainless steel super heavy-duty clamps featuring 410 grade slotted hex head screws.

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Service Station Shop Air and Air Impact Tool Hoses

The Dayco Service Station Shop Air and Air Impact Tool Hose features a heavy, abrasion resistant cover combined with a specially reinforced, seamless, non-porous smooth tube that provides increased pull and burst strength, durability, and maximum service life. Designed for high quality general purpose air hose, the Dayco Air Hose fills many applications around a service station or manufacturing shop such as inflating tires, blow nozzles and machine air connections.

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PowerBond® by Dayco Diesel Performance Harmonic Balancers

Designed as a high performance alternative for diesel-powered passenger trucks, PowerBond by Dayco Diesel Performance harmonic balancers feature a strong billet steel ring and hub construction, ultra-reliable PowerBond Race Series pressure-bonded technology and are SFI approved for race use. PowerBond Diesel Performance Balancers meet and exceed SFI 18.1 standards.

  • Strong billet steel ring and hub construction
  • Ultra-reliable PowerBond race series pressure-bonded technology
  • SFI-approved for race use
  • Available for most popular Chevrolet, Dodge, Ford and GMC diesel engines

Europe market: Packaging environmental labelling

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Vibration Dampers

The vibration damper is a device that absorbs the vibrations generated by the driving shaft. It is widely used in motorcars to prevent any discomfort, damage and failure due to vibrations.

It usually serves as a guide pulley for PV belts and to strengthen the auxiliary components (water pump, power steering, compressor, etc.).

The damper should be replaced when the rubber absorbing element is too worn to reduce the vibrations. It is recommended to check the damper rubber ring for rigidity (check that the rubber aging does not cause excessive hardening, crystallization or cracks).

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PowerBond® by Dayco Harmonic Balancers

Designed as premium OEM replacement balancers for serpentine and V-belt drives on the most popular passenger car, light commercial and four-wheel drive applications.

Manufactured using a premium ductile iron casting and injection bonded dampening rubber, PowerBond® harmonic balancers offer engine builders and technicians the highest quality replacement to standard OEM balancers, which are typically made with press inserted dampening rubber. Our balancers utilize both inserted and pressure-bonded rubber to provide superior bonding strength between the inner and outer balancer rings, helping minimize spin and dislocation.

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PowerBond® by Dayco Street Performance Harmonic Balancers

Designed as premium OEM replacement balancers for serpentine and V-belt drives on the most popular passenger car, light commercial and four-wheel drive applications.

Manufactured using a premium ductile iron casting and injection bonded dampening rubber, PowerBond® harmonic balancers offer engine builders and technicians the highest quality replacement to standard OEM balancers, which are typically made with press inserted dampening rubber. Our balancers utilize both inserted and pressure-bonded rubber to provide superior bonding strength between the inner and outer balancer rings, helping minimize spin and dislocation.

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Hydraulic Timing Belt Actuators

Also known as a hydraulic tensioner, the Dayco Hydraulic Timing Belt Actuator is designed to absorb changes in the loss of timing belt tension.

A loss in timing belt tension may be caused by variations in engine temperatures, speed or general wear and aging of the belt. The Dayco Hydraulic Timing Belt Actuator maintains constant tension on the timing belt during crankshaft revolution which reduces noise, prevents belt flapping and ensures proper transmission efficiency throughout the entire service life of the belt.

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Tensioners and Pulleys

The increase in engine performance and the continuous increase in accessory components have been considered in the design development and choice of materials, even for rigid components.

The control components for accessory devices, with both fixed and automatic tensioning, must meet the growing needs of the manufacturers:

  • Increasingly reduced workspaces
  • High temperatures
  • Continuous stress
  • Increase in the component replacement interval

It follows that all the elements of the system must meet extremely high quality standards.

The fundamental types of rigid components are:

FIXED TENSIONERS: the final tension on the belt is applied through the correct setting of the tensioner and remains constant over time. The belt tension is therefore determined during installation, in which case we recommend using the Dayco DTM Tensiometer to ensure that the system functions correctly.

AUTOMATIC TENSIONERS: they can be spring or hydraulic. They are dynamic tensioners because once properly installed, they are able to continuously adapt to the operating conditions of the engine and optimize the belt tension according to the different stresses received from the engine, in all operating conditions.

IDLER PULLEYS: they are pulleys with or without support that help the belt circuit, effectively contributing to the restraint of misalignment and noise reduction.

Dayco supplies components of original quality or equivalent to the original for its range.

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Friction Wheels

The Dayco friction wheel is a component developed to transmit power from the crankshaft pulley to the water pump pulley.

The main advantage of the friction wheel is the ability to switch on the water pump, via an electromechanical actuator. The actuator, driven by an electronic control unit (through an electrical signal) can activate the water pump by transmitting mechanical power to the belt. When the engine is cold the coolant will not circulate until the engine has reached normal operating temperature because the water pump is switched off: this will warm up the engine more quickly, reduce fuel consumption and keep exhaust pollution within the EURO 5 emission limits.

Additionally, there are fewer mechanical losses during the disconnection phase of the water pump. Faster heating of the passenger compartment can be achieved thus increasing passenger comfort in cold weather. Dayco is the OE supplier of the entire friction wheel system, which includes a water pump pulley, tensioner, Poly-V belt and friction wheel.

Europe market: Packaging environmental labelling

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Alternator Freewheels

With the increase in the amount of accessories requiring extra electrical power, such as GPS navigation systems and heating and cooling power seats, alternator freewheels are becoming popular on many late model vehicles due to increased alternator loads and engine torsional fluctuations.

Dayco OAPs allow the alternator to ‘freewheel’ when the belt speed drops and are engineered with one-way clutches that allows the rotational inertia of the alternator to “overrun” during any belt deceleration event. Dayco OAPs, which are designed for long service life, decrease drive belt vibration and reduce belt slippage during rapid acceleration or deceleration, resulting in reduced stress on the drive belt and other accessories as well as increased alternator and drive belt life.

Dayco ADPs have one-way clutching capability which allows the ADP to isolate and dampen the drive from the alternator upon deceleration. Similar to Dayco OAPs, ADPs reduce belt slippage during rapid acceleration or deceleration, reduce stress on the drive belt and other accessories and reduce belt noise, all while increasing alternator and belt drive life as well as improving the variation of drive belt tension.

Europe market: Packaging environmental labelling

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OAP and ADP Tool Kits

Overrunning alternator pulleys (OAP) and overrunning alternator decoupler pulleys (ADP) should only be removed from the alternator using the proper tools.

The Dayco OAP and OAD Tool Kit contains all of the tools needed to remove and fit a new OAP or ADP. Made from the highest quality materials, our tool kit can be used with hand ratchets or impact guns. This 13-piece kit features interchangeable components to work on almost all vehicles and comes in a handy molded carrying case.

Kit Includes:

  • Removal and Installation Instructions
  • OAP/ADP Connectors in 33T Spline and 17mm Hex
  • Alternator Shaft Connectors in T40, T50, M8, M10, 8 Hex and 10 Hex

Note: OAPs and ADPs are application-specific replacement parts, and if a vehicle requires an OAP or an ADP, the same category of pulley must be installed. Proper tools must be used to remove and install OAPs and ADPs.

Europe market: Packaging environmental labelling

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Tensioner Retainer Pin Sets

The Dayco Tensioner Retainer Pin Set is designed for the installation and maintenance of timing belt tensioners. To safely retain the hydraulic pin of a timing belt tensioner in a compressed state during servicing, Dayco recommends the use of this handy Tensioner Retainer Pin Set. Consisting of six different sized spring hardened steel pins, the set accommodates a wide variety of timing belt tensioners, including certain serpentine belt applications.

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Telescopic Belt Retrieval Poles for Drive Belts

This sturdy aluminum telescoping pole extends from 1.32m to 2.40m providing that “extra reach” for retrieving belts. When extended to the desired length, the poles’ unique twist and lock feature prevents the pole from unexpectedly retracting.

Note: NOT recommended for uses other than belt and hose retrieval.

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Hose and Tubing Cutters

Dayco’s Hose and Tubing Cutter handles non-reinforced and textile reinforced rubber hose and tubing through 2″ I.D. A replaceable hardened stainless steel blade allows for a clear cut with no burrs or residue. Featuring a safe to use tough glass filled nylon handle with attached ring.

93847: Hose and Tubing Cutter

93848: Replacement Blades

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Drive Belt Tension Gauges

Advantages:

  • Enables the user to get to those cramped areas to measure belt tension.
  • Cost effective way to get a tensioner into the hands of every mechanic.
  • Small enough to carry around in your pocket.

Improperly tensioned belts cause slippage, squealing, heat build-up and premature failure. Dayco engineers recommend careful belt tensioning. After a new belt has been installed, run the engine for 3 to 5 minutes to seat the belt. After seating the belt, reset the tension to amount recommended as per the vehicle manufacturers specifications.

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