Honda motorcycle parts
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1981 Honda CB650C Custom · Engine Service Parts Buying guide
The paper oil element, alternator cover gasket and standard ring set each address a separate job. Keep routine maintenance apart from work that requires internal measurements and a more detailed teardown plan.
Paper oil filterStock-type paper element for the original filter housing. O-rings, spring and washer are separate.View part
Alternator cover gasketSeparate gasket for reference 11691-426-306, listed for the CB650C engine.View part
Standard piston ringsOne standard-size ring set covers one piston. Four sets cover all four pistons.View part
The alternator cover gasket is listed against reference 11691-426-306, while the cylinder-cover gasket has its own reference and outline. Choose for the actual opened joint. A seven-piece oil seal kit is another product type, not an automatic substitute for a flat cover gasket.
The selection includes a silent cam chain, an internal primary chain and rear drive-chain adjustment hardware. Their names describe different systems. Match the component and specification before ordering rather than treating every chain-related product as part of the final drive.
Confirm the piston and bore first. Previous engine work may have changed the size; the listed standard set is for one piston and cannot establish the condition or dimensions of your engine.
Compare the opened cover and gasket outline with reference 11691-426-306 for the listed CB650C engine. A replacement engine or altered cover requires its own application check before ordering.
Identify the source and the joints that must be opened. Individual gaskets and seals can serve focused repairs; compare a broader set only when its confirmed contents suit the planned disassembly.
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