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1980 Honda CB750C Exhaust Gaskets & Studs

A headpipe gasket and a manifold stud solve different parts of an exhaust-joint repair on the 1980 CB750C. Inspect the seal and fastening points separately before ordering. The gasket is sold individually, so count the joints being opened rather than assuming a complete set.

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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 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...
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1980 Honda CB750C · Exhaust Gaskets & Studs Buying guide

Choose sealing and fastening parts separately

The featured exhaust-port gasket and related 8 × 55mm stud are separate products. Compare the original joint and hardware before deciding the quantity of each.

Parts to consider

Honda CB Exhaust Headpipe Gasket (Each) ~ Replaces 18291-254-000 Individual headpipe gasketOne exhaust-port gasket; references 18291-254-000 and 18291-MM5-860.View part

Related parts: Exhaust manifold stud

Gasket quantity follows the repair

The featured gasket supplies one sealing piece. A repair involving several headpipes needs an explicit gasket count. Check any gasket set already in the order so you do not duplicate exhaust gaskets included elsewhere.

Stud replacement is a separate decision

The related stud is listed at 8 × 55mm with reference 90035-425-000. Inspect its mounting and the old fastener before purchase, and use the appropriate service instructions for safe removal and installation.

Exhaust Gaskets & Studs questions

How many headpipe gaskets should I order?

Count the joints being opened and check any gasket set already selected. The featured headpipe gasket is sold individually, so choose the quantity needed for the actual repair.

How do I avoid ordering duplicate gaskets?

Check the contents of any engine overhaul or top-end set already selected. Some sets list exhaust headpipe gaskets, while the featured product is a separate individual gasket.

What should I compare for a replaced exhaust?

Compare the headpipe sealing connection and mounting hardware with the actual system. Do not assume its required fasteners and sealing parts are unchanged solely from the motorcycle’s model year.

Not sure which part you need?

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

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