Engine Fastener Kit. In search of fasteners? Whether you are repairing your ride, customizing a special, or restoring a classic, Bolt has the hardware you need. 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. Contents are in labeled bags for accurate placement. 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 and 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.