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  • Honda CB400 / CB450 / CB125 Valve Stem Seal
Honda CB400 CB450 CB125 valve stem seal 12208-413-003
Valve stem seal parts fiche diagram, SKU 01-0128
Honda 80-81 CB400T Valve Stem Seal ~ Honda OEM 12208-413-003 — 02 Rear three quarter view
Honda 80-81 CB400T Valve Stem Seal ~ Honda OEM 12208-413-003 — 01 Front three quarter view
Honda 80-81 CB400T Valve Stem Seal ~ Honda OEM 12208-413-003 — 04 Right side view
Honda 80-81 CB400T Valve Stem Seal ~ Honda OEM 12208-413-003 — 03 Front view
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Honda CB400 CB450 CB125 valve stem seal 12208-413-003

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Load image into Gallery viewer, Honda CB400 CB450 CB125 valve stem seal 12208-413-003
Load image into Gallery viewer, Valve stem seal parts fiche diagram, SKU 01-0128
Load image into Gallery viewer, Honda 80-81 CB400T Valve Stem Seal ~ Honda OEM 12208-413-003 — 02 Rear three quarter view
Load image into Gallery viewer, Honda 80-81 CB400T Valve Stem Seal ~ Honda OEM 12208-413-003 — 01 Front three quarter view
Load image into Gallery viewer, Honda 80-81 CB400T Valve Stem Seal ~ Honda OEM 12208-413-003 — 04 Right side view
Load image into Gallery viewer, Honda 80-81 CB400T Valve Stem Seal ~ Honda OEM 12208-413-003 — 03 Front view

Honda CB400 / CB450 / CB125 Valve Stem Seal

01-0128
$3.10 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 1,347 store reviews
Secure checkoutProtected payment
60-day returnsEligible unused parts Free ground shippingUSA & Canada over $50
Browse all parts
Honda CB400 / CB450 / CB125 Valve Stem Seal
$3.10 USD
Description

Stop top-end oil loss with this Valve Stem Seal, a replacement for OEM #12208-413-003 / #12209-KL4-005 / #12209-428-003. Fits a range of smaller-displacement Hondas, sealing the valve guide to prevent oil migration past the stem and into the combustion chamber.

Sold individually. Order the quantity your top-end rebuild or service calls for.

Key Features
• Replaces OEM #12208-413-003 / #12209-KL4-005 / #12209-428-003
• Seals valve stem against oil passage
• Sold each (order quantity needed)
• Honda part name: Gasket Kit A

Fitment / Compatibility

• Honda CB400T (1980‑81)
• CB450SC (1982‑83 / 1985‑86)
• CB450T (1982)

• Honda CB100K (1970‑72)
• CB125S (1973‑76 / 1978‑82 / 1984‑85)

Part Number: 01-0128

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

Make Model Year
Honda CB400TA Hawk 1980
Honda CB400TB Hawk 1981
Honda CB450SCC Nighthawk 1982
Honda CB450SCD Nighthawk 1983
Honda CB450SCF Nighthawk 1985
Honda CB450SCG Nighthawk 1986
Honda CB450TC 1982
Honda CB100K0 1970
Honda CB100K1 1971
Honda CB100K2 1972
Honda CB125S0 1973
Honda CB125S1 1974
Honda CB125S2 1975
Honda CB125S3 1976
Honda CB125S5 1978
Honda CB125S 1979
Honda CB125S 1980
Honda CB125S 1981
Honda CB125S 1982
Honda CB125S 1984
Honda CB125S 1985

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

How many 12208-413-type valve-stem seals are used in the listed CB400 and CB450 twins?

One seal is included. The listed three-valve-per-cylinder CB400T and CB450 engines use four at the intake valves; their two exhaust valves use a different seal specification.

How many valve-stem seals are required for the listed CB100K and CB125S engines?

One seal is included. Each listed two-valve single-cylinder CB100K or CB125S engine uses two valve-stem seals, one intake and one exhaust, so two are required for a complete top-end service.

What should be inspected when replacing valve-stem seals?

Check valve-stem-to-guide clearance before fitting new seals. Worn guides or damaged valve stems can continue to draw oil even with new seals, and the seal lip must be protected from sharp keeper grooves during installation.

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