1YW- 14451-00-00 Air Filter Product Features Foam material, high intake efficiency, improve engine power. The double-layer foam design ensures full filtration of impurities. Special adhesive to prevent cracking of the filter. greaseless sealing ring, while acting as a breathable gasket for increased air passage. 1YW- 14451-00-00 Air oil filter with spark plug set Compatible with following models: Compatible with 1992 - 1998 Yamaha Timberwolf 250 2x4 (YFB250U) Compatible with 1994 - 2000 Yamaha Timberwolf 250 4x4 (YFB250FW) Compatible with 1996 - 1999 Yamaha Big Bear 350 2x4 (YFM350U) Compatible with 1987 - 1999 Yamaha Big Bear 350 4x4 (YFM350FW) Compatible with 1989 - 1991 Yamaha Moto-4 250 (YFM250) Compatible with 1987 - 1995 Yamaha Moto-4 350 (YFM350ER) Compatible with 1993 - 1999 Yamaha Kodiak 400 4x4 (YFM400FW) Package included: 1x air filter + 1x oil filter + 1x spark plug + 1x Fuel Petcock NOTE: Before purchasing, please make sure the part number matches the part you want to replace.