Dayco HD Serpentine Belt Kits

Extreme Performance for Demanding Environments

Dayco heavy-duty serpentine belt kits – which provide coverage for millions of commercial trucks – are OE-engineered to perform in the most demanding environments where safety and productivity are essential.

Each Dayco belt kit includes all the necessary components to ensure the belt drive system performs optimally – most importantly, its ability to handle higher torque and power pulses.

Every kit includes one premium tensioner – either an OE-designed tensioner or Dayco’s unique 2-piece design, two heavy-duty dual bearing pulleys, and one or two diesel-grade belts specially treated to increase flexibility, reduce rib cracking and run cooler.

• HD serpentine belt kits that include the 2-Piece tensioner (#89947) help cut installation time in half for specific Detroit Diesel engines. The tensioner was designed to address installation issues and failures that occurred with the original design.
• HD serpentine belt kits with OE-designed tensioners help reduce premature accessory bearing failure and extend system life.

Just like many other components on today’s class 4-8 trucks, it’s important that technicians inspect the belt, pulleys and tensioner together and replace all components in the front-end accessory drive system at once for optimum performance and vehicle uptime.