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  • 1969-73 Honda CB750K Cylinder Head Gasket ~ Replaces 12251-300-050
Honda CB750K cylinder head gasket 12251-300-050
VintageCB750 parts reference, SKU 18-6990. 1973 Honda CB750K3 (USA A) example. OEM 12251-300-050.
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Honda CB750K cylinder head gasket 12251-300-050

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Load image into Gallery viewer, VintageCB750 parts reference, SKU 18-6990. 1973 Honda CB750K3 (USA A) example. OEM 12251-300-050.

1969-73 Honda CB750K Cylinder Head Gasket ~ Replaces 12251-300-050

18-6990
$42.95 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
Browse all parts
1969-73 Honda CB750K Cylinder Head Gasket ~ Replaces 12251-300-050
$42.95 USD
Description

Replace your earliest SOHC CB750K cylinder head gasket with this Cylinder Head Gasket, replacing OEM #12251-300-050. Fits the 1969-73 CB750K.

Key Features
• Cylinder head gasket
• Replaces OEM #12251-300-050

Fitment / Compatibility
• Honda CB750K (1969‑73)

Part Number: 18-6990

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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

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

Which SOHC CB750K uses head gasket 18-6990?

It is the cylinder-head gasket for the listed 1969-1973 Honda CB750K engines.

Which Honda cylinder-head gasket does 18-6990 replace?

One head gasket is included and cross-references Honda OEM 12251-300-050.

Where does the cylinder-head gasket seal?

It seals the combustion, oil and related passages between the cylinder block and cylinder head; it is different from the cylinder-base and valve-cover gaskets.

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