1981 Honda CB650 Engine Parts & Oil Service

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1979-82 Honda CB650 / CB650C / CB650SC Athena Gasket Set (Top End Set Only)

$149.95 USD

Freshen up the top end of your CB650 with this Athena Top End Gasket Set. Athena of Italy is an original-equipment supplier to Yamaha,...

Honda CB650 silent cam chain 412 x 112 14401-426-024

Honda CB650 Silent Cam Chain 412 x 112 ~ Replaces 14401-426-024

$84.95 USD

Refresh the valvetrain on your CB650 with this Silent Cam Chain, 412 x 112 links. A direct replacement for original OEM chain #14401-426-024 across...

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1981 Honda CB650 · Engine Parts Buying guide

Build the engine order around the repair

Start with the work you have diagnosed. The selected filter, head gasket and silent cam chain represent three separate service jobs, with exact applications and package details to check.

Parts to consider

Honda CB Oil Filter ~ Replaces 15410-426-010

Paper oil filterStock-type paper element for the original filter housing; seals and hardware are separate.View part

1979-82 Honda CB650 / CB650C / CB650SC Cylinder Head Gasket ~ Replaces 12251-426-306

Cylinder head gasketCB650 head gasket replacing reference 12251-426-306.View part

Honda CB650 Silent Cam Chain 412 x 112 ~ Replaces 14401-426-024

Silent cam chain412 × 112-link chain replacing reference 14401-426-024.View part

Filter service without extra assumptions

The paper filter is intended for the original housing. Its seals, spring and washers are separate items, so check what is already present before ordering. A spin-on conversion needs its own replacement filter rather than another loose paper element.

Order for the opened assembly

A head gasket, valve-cover gasket and engine overhaul set cover different repairs. Build your list from the actual dismantling plan and inspect the surrounding parts. Use the CB650 service manual for measurements and assembly procedures instead of choosing parts from engine noise alone.

Ordering questions

Does one ring set rebuild the engine?

No. The standard-size ring set covers one piston; four sets are needed for all four. Confirm the measured cylinders and fitted pistons are standard size before placing that order.

Can I reuse a filter-housing shopping list after a spin-on conversion?

Check which filter assembly is installed first. The original paper element and its housing hardware apply to the stock arrangement; the chrome spin-on filter is a separate conversion choice.

How should I choose between individual gaskets and a set?

Use the repair scope. A single opened cover may need its own gasket, while wider dismantling may justify a set. Check the exact contents rather than assuming every oil seal is included.

Not sure which part you need?

Send your model and year, plus photos of your existing part and any changes to the original setup.

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Honda motorcycle parts

1979-82 Honda CB650 / CB650C / CB650SC Athena Gasket Set (Top End Set Only)

Honda CB650 Silent Cam Chain 412 x 112 ~ Replaces 14401-426-024