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1982 Honda CB750C Headpipe Sealing Service

Locate the exhaust joint needing service before ordering for a 1982 CB750C. The featured individual gasket seals the cylinder-head-to-headpipe connection. Count the ports being opened and inspect the retained mounting hardware, especially where a replacement exhaust has changed the fittings around the engine.

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Honda CB1100 CB1000 CB900 exhaust headpipe gasket (each) 18291-254-000

Honda CB Exhaust Headpipe Gasket (Each) ~ Replaces 18291-254-000

$3.42 USD
17-2812
Replace one exhaust port gasket on your CB750 or big-bore DOHC CB with this Exhaust Port Gasket, 1 piece, replacing OEM #18291-254-000 / #18291-MM5-860....
Honda CB1100 CB1000 CB900 exhaust headpipe gasket (each) 18291-MM5-860

Honda CB Exhaust Headpipe Gasket (Each) ~ Replaces 18291-MM5-860

$6.84 USD
18-7013
Replace one cylinder-head-to-exhaust-headpipe gasket on your big-bore Honda with this Cylinder Head to Exhaust Headpipe Gasket, 1 piece, replacing OEM #18291-MM5-860. Exceptionally broad fitment...
Honda CB750C CB750K CB750L exhaust manifold stud 90035-425-000

1979-82 Honda CB750C / CB750K / CB750L Exhaust Manifold Stud ~ Replaces 90035-425-000

$4.45 USD
73-0988
Replace your exhaust manifold stud with this Exhaust Manifold Stud, 8mm x 55mm, replacing OEM #90035-425-000.Key Features• Exhaust manifold stud• 8mm x 55mm• Replaces...
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Honda CB1100 CB1000 CB900 CB750 Honda exhaust pipe joint collar 18233-425-000

Honda CB1100 / CB1000 / CB900 / CB750 Genuine Honda Exhaust Pipe Joint Collar ~ OEM 18233-425-000

$24.95 USD
99-5455
Upgrade or restore your classic Honda motorcycle with this Exhaust Pipe Joint Collar — precision‑engineered and made in Japan. This genuine OEM part #18233‑425‑000...
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1982 Honda CB750C · Headpipe Sealing Service Buying guide

Match the gasket to the cylinder-head joint

The featured gasket is sold each and includes reference 18291-MM5-860. A related individual gasket is an alternative for that joint. The manifold stud is separate fastening hardware with an 8 × 55mm specification.

Parts to consider

Honda CB Exhaust Headpipe Gasket (Each) ~ Replaces 18291-254-000 Individual headpipe gasketOne exhaust-port gasket; references 18291-254-000 and 18291-MM5-860.View part

Related parts: Individual headpipe gasket · Exhaust manifold stud

Count seals for the actual dismantling

One gasket is supplied per product. Count the headpipe joints included in the repair and check whether a larger engine gasket package already supplies them. The related gasket alternative should be compared as another product choice for the same joint, not an additional stacked seal.

Inspect the mounting before reassembly

The related 8 × 55mm manifold stud replaces 90035-425-000. Compare the retained fastener and receiving threads before ordering. A changed exhaust may have different mounting requirements elsewhere, so follow the service guidance for the actual connection being rebuilt.

Headpipe Sealing Service questions

Does one gasket purchase cover all four ports?

No, it is sold individually. Count the ports included in the work and any suitable exhaust gaskets already supplied in a larger engine package before choosing quantity.

Should I buy both gasket alternatives for one joint?

They are alternative individual products sharing a headpipe-gasket reference. Compare their details with the joint being serviced and choose the appropriate replacement rather than assuming two seals are required together.

What should be checked with an aftermarket exhaust?

Compare its cylinder-head connection, retaining pieces and stud requirements. Identify other changed joints separately, since their seals and hardware may differ from the original arrangement.

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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