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  • Honda CB750 / CB400 Valve Stem Seal
Honda CB750 CB400 valve stem seal 12209-300-000
Valve stem seal, SKU 01-0131: product photo and 1974 Honda CB750K4 (A) Valve / Rocker arm fiche with the part location highlighted. Example diagram; check listing for fitment.
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Honda CB750 CB400 valve stem seal 12209-300-000

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Load image into Gallery viewer, Honda CB750 CB400 valve stem seal 12209-300-000
Load image into Gallery viewer, Valve stem seal, SKU 01-0131: product photo and 1974 Honda CB750K4 (A) Valve / Rocker arm fiche with the part location highlighted. Example diagram; check listing for fitment.

Honda CB750 / CB400 Valve Stem Seal

01-0131
$3.50 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
Secure checkoutProtected payment
60-day returnsEligible unused parts Free ground shippingUSA & Canada over $50
Browse all parts
Honda CB750 / CB400 Valve Stem Seal
$3.50 USD
Description

Rebuild your CB750 top end the right way with this Valve Stem Seal, replacing OEM Ref. #12209-300-000 / #12209-300-003 / #12209-300-005 / #12209-300-010. Fits both intake and exhaust valve guides on all 1969-78 CB750 models and extends to select late-'70s CB400 variants. A critical service part whenever you're past the valve cover.

Note: 8 seals are used per bike on the CB750. Sold individually so you can order exactly what your rebuild needs.

Key Features
• Replaces OEM #12209-300-000 / 003 / 005 / 010
• Fits both intake and exhaust valve guides on CB750
• 8 seals used per CB750
• Sold each (order quantity needed)

Fitment / Compatibility

• All Honda CB750 models (1969‑78), intake and exhaust valve guides

• Honda CB400A (1978)
• CB400TI (1978‑79)
• CB400TII (1978‑79)

Part Number: 01-0131

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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 CB400A 1978
Honda CB400TII Hawk 1978
Honda CB400TIIZ Hawk 1979
Honda CB400TII Hawk 1978
Honda CB400TIIZ Hawk 1979

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.

See full shipping details

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

How many valve-stem seals are included and required for a 1969-78 Honda CB750?

One seal replacing Honda OEM 12209-300-000, 12209-300-003, 12209-300-005 or 12209-300-010 is included. A SOHC CB750 has eight valves—four intake and four exhaust—and uses this seal at all eight positions, so eight are required for a complete engine.

How many of these seals are used in the listed CB400 three-valve twins?

The 1978 CB400A and 1978-79 CB400T I/II engines have four intake valves and two exhaust valves. Two of these 12209-series seals are used at the exhaust valves; the four intake positions use the 12208-413-type seal sold separately.

Is this the correct valve-stem seal for a 1979-and-later DOHC CB750?

No. SKU 01-0131 serves the eight-valve 1969-78 SOHC CB750. The 16-valve 1979-and-later DOHC applications use a different seal specification, including Honda OEM 12209-422-005 where listed.

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