Shop Dayco® Heavy-Duty Truck Parts

With over 100 years of experience, Dayco® continues to be a global leader in the research, design and distribution of quality engine drive systems servicing the heavy-duty trucking industry. Dayco's expertise in transferring power quietly and efficiently has driven them to new global solutions for hybrid electric vehicles and helps aftermarket customers move forward.

With global applause, and multiple locations throughout North America, Dayco® offers customers reliable aftermarket engine parts for all types of commercial trucks at affordable rates. Their full line of kits and products are just what clients are looking for in construction, agricultural and industrial applications. When shopping for engine parts for your HD truck, customers can trust Dayco for quality products.

Dayco® Automatic Belt Tensioners and Pulleys

Benefits of Dayco No Slack® Idler/Tensioner Pulleys include:

• Built with smoother surfaces and tighter dimensional tolerances, which translates to less vibration and therefore longer pulley life.
• Lifetime lubricated ball bearings.
• Double high temperature seals to assure peak bearing performance.
• Flat pulley that contains specially formulated glass-filled polymers to ensure a high strength, cooler running, wear resistant "plastic" pulley.
• Meets or exceeds OE quality.

The Dayco NO SLACK® automatic belt tensioner features a flat spring design to provide less operating range vibrations. With this benefit, it helps reduce the risk of bearing failure due to high tension when a new belt is installed and comes with other special features including: Thermoplastic rubber spring slot plug (where applicable) helps keep out harmful contaminants; a rubber “O” ring which seals against dust and grime (where applicable); and Zinc-coated mounting bolt that resists rust (where applicable).

Dayco NO SLACK® automatic belt tensioners are specifically built to outperform and outlast competitive OE parts. The heavy duty cast aluminum spring case resists cracking and fatigue. Each component is built to resist rust, endure the toughest of conditions while promoting quieter performance and longer life. Additionally, they are manufactured with a specially coated patented flat wire spring to allow the internal tension to be concentric, thus providing a more even degree of constant tension; Contain a metallic locator pin built to withstand extreme drive demands and properly locate the tensioner for installation; and offer a patented Deflected Arm Plate that dampens arm movement, prolonging the life of the tensioner by limiting the amount of rotational movement.

Dayco® Guarantees

Dayco® aftermarket truck parts come with warranties based on application type to give customers peace of mind that they are receiving a reliable replacement engine component. Light duty parts come with a 12 month/12,000 mile warranty whereas heavy-duty parts come with a 24 month/150,000 mile warranty. When shopping for engine system parts for your heavy-duty everything, turn to Dayco®.