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1977 Honda CB750F Exhaust Gaskets & Mounting Hardware

Remounting the exhaust on a 1977 Honda CB750F calls on five listings. There are two port gaskets sold one at a time, a collector gasket for 1976-77 machines, a flange clamp built to the stock pattern and a kit of eight studs with eight nuts.

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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....
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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 CB750F CB750K exhaust stud and flange nut set

1975-78 Honda CB750F / CB750K Exhaust Stud & Flange Nut Set

$34.95 USD
73-1141
Ensure a solid, leak-free seal at your exhaust ports with this Exhaust Stud Set. Includes 8 high-quality studs and 8 flange nuts — everything...
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 CB750F headpipe to collector gasket

1976-77 Honda CB750F Headpipe to Collector Gasket

$9.95 USD
17-4529
Replace the headpipe-to-collector gasket on your 1976-77 CB750F Supersport with this Headpipe to Collector Gasket.Key Features• Headpipe to collector gasketFitment / Compatibility• Honda CB750F...
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1977 Honda CB750F · Exhaust gaskets & hardware Buying guide

Match the gasket to the connection

Identify the exhaust connection and required replacement reference before choosing a gasket. Select the clamp and stud hardware separately for the exhaust fitted, rather than treating a model tag as a complete parts list.

Gaskets and hardware to consider

Honda CB Exhaust Headpipe Gasket (Each) ~ Replaces 18291-254-000 Port gasket 17-2812Single exhaust-port gasket listing the 1975–78 CB750F.View part 1975-78 Honda CB750 Exhaust Flange Clamp ~ Replaces 18231-392-000 OEM-pattern flange clampStock-type clamp replacing 18231-392-000, sold individually.View part 1975-78 Honda CB750F / CB750K Exhaust Stud & Flange Nut Set Stud and nut kitSet of eight exhaust studs and eight flange nuts.View part

Related parts: Collector gasket 17-4529 · Port gasket 18-7013

Flange clamp reference

Clamp 07-4622 replaces 18231-392-000 and is sold individually. Its application lists the 1975–78 CB750F, 1976–78 CB750A and 1977–78 CB750K. Match the reference and fitted exhaust hardware before ordering.

Stud and flange-nut set

Set 73-1141 includes eight exhaust studs and eight flange nuts and lists the 1975–78 CB750F and 1977–78 CB750K. Confirm the hardware required by the fitted assembly; the package contents do not establish the arrangement of an aftermarket exhaust.

Exhaust hardware questions

Do the 254 and MM5 references identify two separate port-gasket purchases?

The two listings overlap: 17-2812 cross-references both 18291-254-000 and 18291-MM5-860, and 18-7013 lists 18291-MM5-860. Both are individual cylinder-head-to-headpipe gaskets. Choose against the replacement reference required by the fitted assembly, rather than assuming the two listing names identify separate sealing positions.

Can either port gasket substitute for the collector gasket?

The listed joints are different. Port gaskets 17-2812 and 18-7013 seal where a headpipe meets the cylinder head. Gasket 17-4529 is instead listed for the headpipe-to-collector connection on the 1976–77 CB750F. Match that connection on the fitted exhaust before ordering.

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