This Dayco 89109 Accessory Drive Belt Idler Pulley replaces Four Seasons 45109, Gates 36164, Gates 36269, Hayden 5109, CARQUEST 36164, CARQUEST 36269, Cummins 2871294, Cummins 4920105, John Deere RE503897, Navistar 1841930C1, NAPA 36164, NAPA 36269, OEM parts and is perfect for replacement or a performance upgrade. .
