Dayco No Slack Idler/Tensioner Pulleys are built with smoother surfaces and tighter dimensional tolerances, which translates to less vibration and therefore longer pulley life. Product Features:Lifetime lubricated ball bearingsDouble high temperature seals to assure peak bearing performanceFlat pulley that contains specially formulated glass-filled polymers to insure a high strength, cooler running, wear resistant plastic pulleyMeets or exceeds OE quality
