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1978 Honda CB750A Exhaust Gaskets, Flanges & Joint Collars

Identify the sealing or mounting piece needed on your 1978 Honda CB750A before ordering exhaust repair parts. Individual headpipe gaskets, stock-type flange clamps and joint collars are separate purchases. Compare the fitted exhaust and count the specific parts the repair requires.

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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...
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 CB750 exhaust flange clamp side detail 18231-392-000

1975-78 Honda CB750 Exhaust Flange Clamp ~ Replaces 18231-392-000

$34.95 USD
07-4622
Rebuild your late-'70s CB750 exhaust with this Stock-Type Exhaust Flange Clamp, replacing OEM #18231-392-000. An essential piece of exhaust mounting hardware for CB750K (1977-78),...
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Honda CB750A CB750F CB750K Honda exhaust pipe joint collar 18233-392-000

1975-78 Honda CB750A / CB750F / CB750K Genuine Honda Exhaust Pipe Joint Collar ~ OEM 18233-392-000

$29.95 USD
99-5173
Upgrade or restore your classic Honda motorcycle with this Genuine Honda Exhaust Pipe Joint Collar — precision‑engineered and made in Japan. This original Honda...
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1978 Honda CB750A · Exhaust Buying guide

Separate the gasket, flange and collar before ordering

The gasket listings describe cylinder-head/headpipe sealing pieces; clamps and collars are hardware. Their package sizes and reference numbers need separate checks. Compare the fitted assembly before deciding which pieces belong in your repair.

Parts to consider

Honda CB Exhaust Headpipe Gasket (Each) ~ Replaces 18291-254-000 Individual exhaust port gasketOne port gasket, sold each, referencing 18291-254-000 and 18291-MM5-860. Compare the removed sealing piece before ordering.View part 1975-78 Honda CB750 Exhaust Flange Clamp ~ Replaces 18231-392-000 Stock-type exhaust flange clampFlange clamp referencing 18231-392-000, listed for the 1978 CB750A. Sold each; compare the fitted mounting hardware.View part 1975-78 Honda CB750A / CB750F / CB750K Genuine Honda Exhaust Pipe Joint Collar ~ OEM 18233-392-000 Honda exhaust pipe joint collarHonda exhaust pipe joint collar referencing 18233-392-000, sold per collar piece and listed for the 1978 CB750A. Compare the existing collar before ordering.View part

Related parts: Individual cylinder-head-to-headpipe gasket

Use the gasket reference to avoid a duplicate order

Both gasket descriptions include 18291-MM5-860. Identify the removed sealing piece and choose the appropriate listing before adding both to the order; different product names do not establish separate gasket locations.

Count missing or damaged hardware on the fitted exhaust

Inspect the clamps and collars separately, particularly if the pipes have been changed. Keep the required piece count with each product’s selling unit before ordering.

Common questions

Does a gasket purchase include a set for the whole motorcycle?

Both gasket listings describe one piece and say they are sold each. Count the parts required for the repair and choose the relevant listing. The flange clamp and joint collar are separate hardware products, not implied contents of a gasket purchase.

Do the flange clamp and joint collar have the same replacement reference?

The clamp replaces 18231-392-000, while the collar replaces 18233-392-000. These identify separate pieces in the selection. Match each removed component and count its requirements independently; a clamp count does not establish the required collar count.

Does a flange clamp purchase also include the joint collar?

The flange clamp and joint collar have separate listings and different reference numbers. The clamp is sold each and the collar per collar piece. Compare the fitted hardware and order the particular pieces required rather than assuming either product supplies a complete hardware set.

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

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