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1977 Honda CB750F Exhaust Gaskets & Hardware

The 1977 Honda CB750F still runs a four-into-one system, and these six listings keep it sealed and mounted. Two kinds of port gasket, a collector gasket limited to 1976-77, flange clamps, studs with nuts and a Honda joint collar cover it.

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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 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 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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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 Buying guide

Choosing exhaust sealing parts

Match the parts to the exhaust actually fitted, especially where headpipes or the collector have been replaced. Identify the connection and replacement reference before choosing gaskets or mounting hardware.

Exhaust parts to consider

1976-77 Honda CB750F Headpipe to Collector Gasket Collector gasket 17-4529Gasket listing the 1976–77 CB750F application.View part 1975-78 Honda CB750F / CB750K Exhaust Stud & Flange Nut Set Studs and flange nutsSet of eight exhaust studs and eight flange nuts, listed for the 1975–78 CB750F.View part 1975-78 Honda CB750 Exhaust Flange Clamp ~ Replaces 18231-392-000 Flange clamp 07-4622Stock-type clamp replacing 18231-392-000, sold individually.View part

Related parts: Port gasket 18-7013 · Honda joint collar

Flange clamps and studs

Flange clamp 07-4622 replaces 18231-392-000 and lists the 1975–78 CB750F. Stud set 73-1141 supplies eight exhaust studs and eight flange nuts and lists the 1975–78 CB750F and 1977–78 CB750K. Those are the set’s contents, rather than a count to apply to a modified exhaust.

Genuine Honda collar

Joint collar 99-5173 is identified as a genuine Honda part made in Japan, reference 18233-392-000. It is sold per collar piece and lists the 1975–78 CB750F, 1976–78 CB750A and 1977–78 CB750K. Match that reference to the fitted hardware.

Exhaust questions

Are the two port-gasket listings for different sealing positions?

Both are listed for the cylinder-head-to-headpipe joint. Gasket 17-2812 cross-references 18291-254-000 and 18291-MM5-860, while 18-7013 lists 18291-MM5-860. Their different product numbers do not identify two separate joints; match the replacement reference required by the fitted assembly.

Does collector gasket 17-4529 replace a cylinder-head port gasket?

No. It is listed for the headpipe-to-collector joint on the 1976–77 CB750F, rather than the cylinder-head-to-headpipe joint. Confirm that the fitted exhaust has the matching collector connection; the model listing does not establish compatibility with every replacement exhaust.

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