Dayco Idler/Tensioner Pulley - 89144 Auto Part

Key details: Specially formulated glass-filled polymers; High strength, cooler running and wear resistant; Lower vibration for longer belt life; Lifetime lubricated ball bearings and double high temperature seals. Dayco Idler and Tensioner Pulleys With the increasing use of serpentine drive belts on late model engines, more Idler and Tensioner Pulleys are being sold than ever before. Incorporating ball bearings that run at very high revolutions relative to engine speed these coupled with increasing belt load and exposure to dirt or moisture accelerates bearing wear.