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  • 1978 Honda CB400A Valve Stem Seal
Honda CB400A valve stem seal 12209-413-003
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60-day returnsEligible unused parts Free ground shippingUSA & Canada over $50
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Honda CB400A valve stem seal 12209-413-003

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1978 Honda CB400A Valve Stem Seal

01-0127
$2.31 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 1,330 store reviews
Secure checkoutProtected payment
60-day returnsEligible unused parts Free ground shippingUSA & Canada over $50
Browse all parts
1978 Honda CB400A Valve Stem Seal
$2.31 USD
Description

Valve Stem Seal ~ Replaces Honda OEM 12209-413-003 for the Honda CB models listed below. Use this part for repair, restoration, or replacement work where the listed fitment and OEM reference match your bike.

Key Features

  • Aftermarket replacement part
  • Replaces Honda OEM reference: 12209-413-003
  • Sold as: Each

Fitment / Compatibility

  • Honda CB400A (1978)
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Check the listed model and year, then read any fitment notes in the description.

Make Model Year
Honda CB400A 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.

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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 12209-413-003 exhaust valve-stem seals are included and required?

One exhaust valve-stem seal is included. The two-cylinder, three-valve-per-cylinder CB400A uses one exhaust valve per cylinder, so two of these seals are required for both exhaust valves; the four intake valves use a different seal.

When should CB400A valve-stem seals be replaced?

Replace hardened, damaged or leaking seals during cylinder-head work. Worn seals can contribute to oil consumption or smoke after startup, but guides, rings and breather problems can cause similar symptoms.

Can valve-stem seals be installed without protecting the sealing lip?

No. Clean the valve stem, cover sharp keeper grooves with the proper installation sleeve and press the seal squarely to avoid cutting or distorting its lip.

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