The Dayco Serpentine Light Duty Timing Belt Idler/Tensioner Pulley is the perfect choice for your light duty timing belt needs. This grooved pulley is made from a specially formulated glass-filled polymer to ensure a high strength and long-lasting performance. It also features lifetime lubricated ball bearings and double high temperature seals to ensure peak bearing performance. FleetPride is your First Click in Heavy Duty®.