Engine Fastener Kits come with modern dimpled flange bolts. With a bright zinc finish, these fasteners last long and give a clean, updated look to any engine. Two-Stroke Engine Fastener kits have all the external fasteners from top to bottom-end including hardware for: Heads, Reeds, Cylinder, Crankcase, Case Saver, Water Pump, Left Case Cover, Ignition Cover, Inner & Outer Clutch Covers, Power Valve Covers. Four-Stroke Engine Fastener kits include bottom-end hardware for the following: Crankcase Covers, Clutch Cover, Oil Filter Cover, Crankcase, Case Saver, Water Pump and various top-end bolts depending on model. See note regarding oil cap below. ATV models include the above and countershaft seal/neutral sensor and starter (where applicable) and exterior M6 & M5 fasteners for the engine. See note regarding oil cap below. Available for Yamaha off-road motorcycle models 1989 and newer and select ATV models 1983 and newer. Don't see your model listed? Submit a special request using this form Oil Cap: If your engine uses Yamaha Part Number 90109-065G2-00 or 90110-06228-00 we apologize, but this specific bolt is not included in the engine fastener kit (the other oil cap bolts are included.)This affects models: 1998-2009 YZ/WR 400F/426F/450F, 2001-2013 YZ/WR 250F, and 2004-current YFZ 450 ATVs
