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1984 Honda CB700SC Exhaust Headpipe Gaskets

Exhaust headpipe gaskets for the 1984 CB700SC are sold individually in this selection. Match the cylinder-head joint and replacement reference, then count the joints you are opening. Similar product names do not mean either listing automatically supplies a complete four-cylinder 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....
Sold out
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...
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1984 Honda CB700SC · Exhaust Headpipe Gaskets Buying guide

Count the exhaust joints before ordering gaskets

The selected products address the cylinder-head-to-headpipe seal. Compare the fitted joint and reference, then order the individual quantity required by the repair rather than by the photograph.

Parts to consider

Honda CB Exhaust Headpipe Gasket (Each) ~ Replaces 18291-254-000 Exhaust-port gasketSold as one gasket; references 18291-254-000 and 18291-MM5-860.View part Honda CB Exhaust Headpipe Gasket (Each) ~ Replaces 18291-MM5-860 Headpipe gasketOne cylinder-head-to-headpipe gasket, replacing reference 18291-MM5-860.View part

Use the confirmed sale unit

Each selected listing supplies one gasket. Resealing all four CB700SC cylinder-head exhaust ports therefore requires four individual pieces. If only some joints are disturbed, order for those locations and inspect the sealing faces and mounting hardware before assembly.

Keep the joint location specific

These gaskets seal at the cylinder-head-to-headpipe connection. They do not establish the sealing requirement at a different collector or muffler joint. If an aftermarket exhaust has been fitted, compare the connection and the exhaust maker’s instructions before ordering.

Buying questions

Can an old exhaust-port gasket be left in place under a new one?

No. The replacement guidance calls for removal of the old crush gasket from the disturbed port before installing a fresh one. Check the seat carefully rather than stacking another gasket on top of an old compressed seal.

Do the two Honda references identify different exhaust-joint locations?

Both selected products cover the CB700SC cylinder-head-to-headpipe joint and share reference 18291-MM5-860; one also lists 18291-254-000. The extra reference does not make that item a collector or muffler-joint gasket, or prove a different material.

Can I use them at any exhaust connection?

The supported location is the cylinder-head-to-headpipe joint. Identify collector, muffler or other sealing connections separately, especially when the exhaust system has been changed.

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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