The Dayco tension and idler pulley provides less vibration for a longer belt life. The glass-filled polymers provide strength and cooler running. The lubricated ball bearings and high-temperature seals assure peak performance and this part meets or exceeds OEM (Original Equipment Manufacturer) requirements. Great tools at a great price Brand Dayco Model Accessory Drive Belt Idler/Tensioner Pulley Exterior Molded Position Front Item Weight 3.84 ounces Manufacturer Dayco OEM Part Number 89017 Item model number 89017 Product Dimensions 3.63 x 3.25 x 1.25 inches Manufacturer Part Number 89017 Is Discontinued By Manufacturer No