Kit contains all of the bearings and seals required to service an ATV differential Included in the kits are easy-to-use application diagrams for identifying bearing and seal locations This product can be used with Model Year Part# Yamaha YFB250FW Timberwolf 94-00 FDBSKY-1 Yamaha YFM350FW Big Bear 87-95 FDBSKY-1 Yamaha YFM350FW Big Bear 96-97 FDBSKY-1 Yamaha YFM400 Kodiak (4WD) 93-98 FDBSKY-1 Yamaha YFM35FX Wolverine 95-97 FDBSKY-2 Yamaha YFM350FA Bruin 4WD 04-06 FDBSKY-3 Yamaha YFM400 Big Bear 4WD 03-06 FDBSKY-3 Yamaha YFM400 Kodiak 4WD 00-04 FDBSKY-3 Yamaha YFM400 Kodiak 4WD 05-06 FDBSKY-3 Yamaha YFM450 Kodiak 2004 FDBSKY-3 Yamaha YFM600 Grizzly 98-01 FDBSKY-4 Yamaha YFM450 Kodiak 2003 FDBSKY-5 Yamaha YFM450 Kodiak 05-06 FDBSKY-5 Yamaha YFM660 Grizzly 02-06 FDBSKY-5