NICKEL WURKS COMPLETE ENGINE FASTENER KIT FOR YAMAHA YZ465 AND IT4651980 through 1981The Specbolt Nickel Wurks full engine kits are beautifully Nickel Plated (EXCEPT the cylinder nuts), 10.9 grade, and contain the following fully labeled fasteners, for easy installation on your 465cc Yamaha air cooled engine. FULL ENGINE: Crankcase Bolts and Drain Washer.Top End Kit including 6 Cylinder Head Acorn Flange Nuts paired with 6 Copper Crush Washers, Zinc M12 Cylinder Base Nuts, Bolts for Intake.Left Side Engine Cover (Ignition) and Sprocket Guard bolts.Right Side Engine Covers (Clutch 1pc or 2pc) with the Oil Check Bolt and Copper Washer.Shifter Bolt. Perfect fit and finish every time guaranteed!!! With a Specbolt Nickel Wurks kit, you will get that full "Factory Wurks Titanium" look without the high price tag.