Athena P400485600350 Top End Gasket Kit Fits: Yamaha YFM 350 ER Moto 4 1987-1995, YFM 350 FW Big Bear 4x4 1987-1999, YFM 350 FX Wolverine 1995-2005, YFM 350 U Big Bear 2x4 1997-1998, YFM 350xWarrior 1987-2004, YFM 400 Big Bear 4X4 2004-2012, YFM 400 FW Kodiak 4x4 1993-2002 and more Athena top end gasket kits feature superior quality gaskets, containing the gaskets needed to rebuild your motorcycle or ATV engine Athena ensures they are only using the highest quality gaskets to provide a great seal every time Manufactured in state-of-the-art computer controlled facilities, Athena gaskets are designed and built to meet or exceed OEM specifications Athena is the OEM supplier to 60 percent of European manufacturers