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  • 1969-78 Honda CB750 Cam / Valve Cover Gasket ~ Replaces 12391-300-306
Honda CB750 cam valve cover gasket 12391-300-306
Cam / valve cover gasket, SKU 18-7003: product photo and 1974 Honda CB750K4 (A) Cylinder Head Cover fiche with the part location highlighted. Example diagram; check listing for fitment.
Honda Cam Cover Gasket - Replaces Honda OEM 12391-300-400 — Front three-quarter
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60-day returnsEligible unused parts Free ground shippingUSA & Canada over $50
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Honda CB750 cam valve cover gasket 12391-300-306

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Load image into Gallery viewer, Honda CB750 cam valve cover gasket 12391-300-306
Load image into Gallery viewer, Cam / valve cover gasket, SKU 18-7003: product photo and 1974 Honda CB750K4 (A) Cylinder Head Cover fiche with the part location highlighted. Example diagram; check listing for fitment.
Load image into Gallery viewer, Honda Cam Cover Gasket - Replaces Honda OEM 12391-300-400 — Front three-quarter
5.0 ( 3 reviews)

1969-78 Honda CB750 Cam / Valve Cover Gasket ~ Replaces 12391-300-306

18-7003
$22.95 USD
In stock Usually ships the same or next business day
Check model fitment View fitment
Questions about this part? Contact us 4.8/5 1,330 store reviews
Secure checkoutProtected payment
60-day returnsEligible unused parts Free ground shippingUSA & Canada over $50
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3 product reviews

1969-78 Honda CB750 Cam / Valve Cover Gasket ~ Replaces 12391-300-306

1969-78 Honda CB750 Cam / Valve Cover Gasket ~ Replaces 12391-300-306
$22.95 USD
Description

Replace your SOHC CB750's cam/valve cover gasket with this Cam / Valve Cover Gasket, replacing OEM #12391-300-306.

Key Features
• Cam / valve cover gasket
• Replaces OEM #12391-300-306

Fitment / Compatibility
• All Honda CB750 models (1969‑78)

Part Number: 18-7003

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

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.

Start your return below. Wait for our instructions before mailing a part back.

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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

Which Honda gasket does this replace?

One gasket cross-referenced to Honda OEM 12391-300-306 seals the cam or valve-cover joint on the compatible SOHC CB750.

What should be checked before installing the new gasket?

Remove the old gasket without gouging the aluminum, clean both mating surfaces and inspect the cover for damage or distortion before reassembly.

How should the cover be tightened with a new gasket?

Install any dowels in their correct positions and tighten the fasteners evenly to the Honda specification. Do not use excess sealant that can squeeze into the engine.

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