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Honda CB1100 CB1000 CB900 exhaust headpipe gasket (each) 18291-MM5-860
Exhaust headpipe gasket, SKU 18-7013: product photo and 1980 Honda CB750K (A) Muffler fiche with the part location highlighted. Example diagram; check listing for fitment.
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Honda CB1100 CB1000 CB900 exhaust headpipe gasket (each) 18291-MM5-860

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Load image into Gallery viewer, Honda CB1100 CB1000 CB900 exhaust headpipe gasket (each) 18291-MM5-860
Load image into Gallery viewer, Exhaust headpipe gasket, SKU 18-7013: product photo and 1980 Honda CB750K (A) Muffler fiche with the part location highlighted. Example diagram; check listing for fitment.

Honda CB Exhaust Headpipe Gasket (Each) ~ Replaces 18291-MM5-860

18-7013
$6.84 USD

Sold individually

In stock Usually ships the same or next business day
Check model fitment View fitment
Questions about this part? Contact us 4.8/5 1,329 store reviews
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60-day returnsEligible unused parts Free ground shippingUSA & Canada over $50
Browse all parts
Honda CB Exhaust Headpipe Gasket (Each) ~ Replaces 18291-MM5-860
$6.84 USD
Description

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 covering the full SOHC/DOHC CB750 lineup, Nighthawks, CB900/CB1000/CB1100, and the earliest CB72/CB77.

Sold each, order the quantity you need.

Key Features
• Cylinder head to exhaust headpipe gasket, 1 piece
• Replaces OEM #18291-MM5-860

Fitment / Compatibility

• All Honda CB750 models (1969‑78)

• Honda CB750K (1979‑82)
• CB750F (1979‑82) Supersport
• CB750L (1979) Limited
• CB750C (1980‑82) Custom

• Honda CB750SC (1982‑83) Nighthawk
• CB700SC (1984‑86) Nighthawk

• Honda CB900C (1980‑82) Custom
• CB900F (1981‑82) Supersport
• CB1000 (1994‑95)
• CB1000C (1983) Custom
• CB1100F (1983) Supersport

• Honda CB72 (1961)
• CB77 (1961)

Part Number: 18-7013

Read More
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Check the listed model and year, then read any fitment notes in the description.

Make Model Year
Honda CB750K Standard 1969
Honda CB750K 1970
Honda CB750K 1971
Honda CB750K 1972
Honda CB750K 1973
Honda CB750K 1974
Honda CB750K 1975
Honda CB750F Supersport 1975
Honda CB750K 1976
Honda CB750F 1976
Honda CB750A Hondamatic 1976
Honda CB750P Police 1976
Honda CB750K 1977
Honda CB750F 1977
Honda CB750A 1977
Honda CB750K 1978
Honda CB750F 1978
Honda CB750A 1978
Honda CB750P 1978
Honda CB750K Standard 1979
Honda CB750F Supersport 1979
Honda CB750L Limited 1979
Honda CB750K 1980
Honda CB750F 1980
Honda CB750C Custom 1980
Honda CB750K 1981
Honda CB750F 1981
Honda CB750C 1981
Honda CB750K 1982
Honda CB750F 1982
Honda CB750C 1982
Honda CB750SC Nighthawk 1982
Honda CB750SC 1983
Honda CB700SC Nighthawk 1984
Honda CB700SC 1985
Honda CB700SC 1986
Honda CB900C Custom 1980
Honda CB900C 1981
Honda CB900F Supersport 1981
Honda CB900C 1982
Honda CB900F 1982
Honda CB1000C Custom 1983
Honda CB1100F Supersport 1983
Honda CB77 1961
Honda CB72 1961

Free ground shipping over $50

To the USA & Canada. In-stock orders usually ship from our own warehouse the same or next business day.

Estimated ground delivery after your order ships
DestinationDelivery time
USA4–7 business days
Canada2–6 business days

Ground shipping includes tracking, emailed when your order ships. Need it sooner? Express options are available at checkout.

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60-day returns on eligible parts

No restocking fees. Eligible parts must be unused, uninstalled, unaltered and complete. The 60-day window starts when your order is delivered.

Electrical parts are excluded from standard returns. Check return eligibility.

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Other shipping options

Canada Post Economy: Available at checkout for select small items. Allow 1–3 weeks for delivery. No tracking or insurance is included.

Outside the USA & Canada: Delivery times vary by destination and shipping method. Buyers are responsible for applicable duties, taxes and import fees. We cannot mark orders as gifts.

Frequently Asked Questions

How many Honda 18291-MM5-860 exhaust-port gaskets are included and required?

One exhaust headpipe gasket is included. The compatible four-cylinder Honda engines use four exhaust ports, so four gaskets are required to reseal all four headpipes.

Should an old exhaust-port gasket be reused?

No. The crush gasket deforms to seal the headpipe flange and should be replaced whenever that joint is disturbed. Remove the old gasket from the port before fitting the new one.

What should be checked after exhaust installation?

Seat each headpipe squarely, tighten the flange hardware evenly to the Honda specification and check for exhaust leakage after the engine is started and again after a heat cycle.

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