This Gates FleetRunner 38511 Drive Belt Tensioner Assembly replaces SKF VKM910009, Dayco 89408, Dayco 89441, Dayco 89479, CARQUEST 89408, Caterpillar 1206659, Caterpillar 1352151, Caterpillar 2178938, Caterpillar 87840057, International Harvester (IHC) 1687819C91, International Harvester (IHC) 2028958C93, International Harvester (IHC) 3543883C1, Tendeco 910003, Detroit Diesel 23550238, Goodyear 49509, Litens 910003A, Alliance Truck Parts GT38511, OEM parts and is perfect for replacement or a performance upgrade. .