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1978 Honda CB750A Headpipe Gaskets & Flange Clamps

Choose the part needed at the headpipe connection on your 1978 Honda CB750A by comparing the removed gasket or fitted flange hardware. The two gasket listings share a Honda reference and are sold individually. A flange clamp is a separate mounting purchase, so count each repair’s requirements independently.

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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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1978 Honda CB750A · Gaskets & Mounting Hardware Buying guide

Identify the sealing repair separately from the flange hardware

A gasket and a flange clamp perform different purchasing roles. The listings give individual selling units and Honda references. Their shared category does not establish a complete mounting kit or require both gasket products for one repair.

Parts to consider

Honda CB Exhaust Headpipe Gasket (Each) ~ Replaces 18291-254-000 Single exhaust port gasketPort gasket referencing 18291-254-000 and 18291-MM5-860. Sold as one piece; order the repair quantity required.View part 1975-78 Honda CB750 Exhaust Flange Clamp ~ Replaces 18231-392-000 Individual exhaust flange clampStock-type clamp referencing 18231-392-000. The listing states four used per bike, but the product is sold each.View part

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

Compare the sealing piece before choosing its listing

Keep the removed gasket and replacement reference with the repair notes. Use them to resolve which product to order instead of assigning a different location from each listing’s title.

Inspect the retained mounting pieces

Count the clamps needing replacement and assess the surrounding collars and fasteners independently. Order only the pieces required for the fitted exhaust and check their individual selling units.

Common questions

Are the headpipe gaskets supplied as a four-piece pack?

The two active gasket listings covered here each describe one piece and say sold each. Use the individual product’s selling unit when setting the quantity. Do not assume a full-motorcycle pack from the number of pipes fitted to the bike.

Should I buy both gasket listings for separate joints?

The descriptions use different names but share 18291-MM5-860. That is not evidence of two different joint applications. Identify the sealing piece being replaced and compare the references; ask for clarification before ordering both if a difference remains unclear.

Does the flange clamp include the gasket or other hardware?

The listing describes a stock-type flange clamp sold individually. It does not list a gasket, joint collar or fastener set as included. Inspect those pieces separately and choose their relevant products only when the repair requires them.

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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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