The Dayco 89012 Accessory Drive Belt Idler Pulley is a direct replacement part with a grooved pulley design. It features a 1 bearing with an inner diameter of 17 and a bearing width of 12. Made in the United States, this idler pulley is designed for maximum belt width of 6 ribs and is compatible with various vehicle models. The product carries a California Prop 65 Warning for cancer and reproductive harm. With its high-quality construction and precise fitment, the Dayco 89012 Accessory Drive Belt Idler Pulley ensures optimal performance and longevity for your vehicle's accessory drive system.