NICHE Cylinder Head Kit Part Number: MK1001389 Includes: Cylinder Head Base Gasket Head Gasket and O Ring This Part is known to be Compatible with the following vehicles: Yamaha Grizzly 660 YFM660F 4x4 Limited Edition: 2003 Yamaha Grizzly 660 YFM660F 4x4: 2002-2004 Yamaha Grizzly 660 YFM660FA 4x4: 2005-2008 Yamaha Grizzly 660 YFM660FAH 4x4 Hardwoods Hunter Edition: 2006 Yamaha Grizzly 660 YFM660FAH 4x4 Hunter Edition: 2005 Yamaha Grizzly 660 YFM660FAH 4x4 Outdoorsman Edition: 2006 Yamaha Grizzly 660 YFM660FAHD 4x4 Ducks Unlimited Edition: 2006 Yamaha Grizzly 660 YFM660FAHW 4x4 Wetlands Hunter Edition: 2005 Yamaha Grizzly 660 YFM660FASE 4x4 Special Edition: 2005-2006 Yamaha Grizzly 660 YFM660FG 4x4: 2007-2008 Yamaha Grizzly 660 YFM660FGH 4x4 Hunter Edition: 2007-2008 Yamaha Grizzly 660 YFM660FH 4x4 Hardwoods Hunter Edition: 2003-2004 Yamaha Grizzly 660 YFM660FH 4x4 Hunter Edition: 2002 Yamaha Grizzly 660 YFM660FHW 4x4 Wetlands Hunter Edition: 2003-2004 Yamaha Grizzly 660 YFM660FLE 4x4 Limited Edition: 2004 Yamaha Rhino 660 YXR660FA 4x4: 2004-2007 Yamaha Rhino 660 YXR660FAEX 4x4 Exploring Edition: 2006-2007 Yamaha Rhino 660 YXR660FAH 4x4 Hunter Edition: 2004-2006 Yamaha Rhino 660 YXR660FASE 4x4 Special Edition: 2006 Yamaha Rhino 660 YXR660FDU 4x4 Ducks Unlimited Edition: 2007 Yamaha Rhino 660 YXR660FH 4x4 Hunter Edition: 2007 Yamaha Rhino 660 YXR660FSE 4x4 Special Edition: 2007 Yamaha Rhino 660 YXR660FSP 4x4 Sport Edition: 2007 8Ten Parts Cylinder Head Gasket & Base Gasket Spark Plug Kit