Dayco Heavy Duty Idler/Tensioner Pulleys designed to replace worn Idler and Tensioner Pulleys for Serpentine drives in heavy duty diesel engine applications.

The performance demands of original equipment manufacturers of over-the-road trucking and off-road equipment require a "built for punishment" heavy duty construction.

That's why heavy-duty operators and mechanics specify Dayco.

Dayco Heavy Duty Pulleys are manufactured from steel, powdered metal, or engineered polymer materials to afford wear resistance under harsh environments and feature double pressed-in bearings and retainer to provide long life despite the shock loads experienced in diesel engine applicatio