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1980 Honda CB750K Exhaust Port & Joint Gaskets

Start a 1980 CB750K exhaust sealing order with the connection that needs attention. The port gasket and the separate headpipe joint gasket have different references and descriptions. Match the old seal and installed pipe arrangement before adding mounting hardware to the repair.

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Honda motorcycle parts

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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 CB kick stand stopper rubber 95011-61000

Honda CB Kick Stand Stopper Rubber ~ Replaces 95011-61000

$2.95 USD
07-4624
Replace a worn kick stand stopper with this Kick Stand Stopper Rubber "A", a direct replacement for OEM #95011-61000. Exceptionally broad fitment across the...
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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...
Honda CB900C CB900F CB750K exhaust stud and flange nut set

1979-82 Honda CB900C / CB900F / CB750K Exhaust Stud & Flange Nut Set

$34.95 USD
73-1140
Restore your classic Honda’s exhaust system with this premium Exhaust Stud Set, engineered for durability and a precise fit. This 8-piece kit includes eight...
Honda CB750K CB750L CB650 exhaust joint gasket for headpipe 18391-425-000

1979-82 Honda CB750K / CB750L / CB650 Exhaust Joint Gasket for Headpipe ~ Replaces 18391-425-000

$9.95 USD
17-4506
Replace your DOHC CB750 or 1979 CB650 exhaust joint gasket with this Exhaust Joint Gasket for Headpipe, replacing OEM #18391-425-000 / #18391-MJ4-000.Key Features• Exhaust...
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1980 Honda CB750K · Gaskets & Mounting Hardware Buying guide

Identify the seal before choosing exhaust fittings

This selection contains more than one kind of exhaust gasket. The useful distinction is the connection each listing describes, supported by its OEM reference and photograph, rather than a general search for an exhaust seal.

Parts to consider

Honda CB Exhaust Headpipe Gasket (Each) ~ Replaces 18291-254-000 Individual exhaust port gasketSingle port gasket with references 18291-254-000 and 18291-MM5-860, listed for the DOHC CB750K. Sold individually; order the quantity required.View part 1979-82 Honda CB750K / CB750L / CB650 Exhaust Joint Gasket for Headpipe ~ Replaces 18391-425-000 Headpipe joint gasketJoint gasket with references 18391-425-000 and 18391-MJ4-000. Compare the joint and old gasket with the listed CB750K application.View part

Use references to narrow similar gasket listings

The featured port gasket carries 18291-254-000 and 18291-MM5-860 references, while the joint gasket carries 18391-425-000 and 18391-MJ4-000. Compare the intended connection and existing part. Repeated model fitment across these listings is not evidence that the gaskets replace one another.

Review hardware separately from the sealing part

Studs, flange nuts and other fittings appear alongside seals in the wider exhaust inventory. A gasket purchase does not establish that those fittings are supplied. Assess the installed hardware and read its own product information; clarify any inconsistent package count before planning a multi-part repair order.

Common questions

Can I choose either gasket because both list the CB750K?

The common motorcycle application narrows the search, but the listings describe different exhaust connections and references. Identify the seal being replaced and compare it with the photograph and reference for that particular joint.

Are studs or flange nuts included with these gaskets?

The featured products are gasket listings, separate from the stud and flange nut products. Their descriptions do not establish a combined hardware package. Review any required mounting fittings separately before completing the order.

Will the listed gasket suit replacement exhaust pipes?

That depends on the connection used by the fitted exhaust. The listings provide Honda applications and references, not a guarantee for every aftermarket pipe. Compare the replacement pipe’s joint and seal requirements before ordering.

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