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  • Honda CB Primary Chain ~ Replaces 23131-426-003
Honda CB650 CB550 CB500 CB400 CB350 primary chain 23131-426-003
Primary drive chain parts fiche diagram, SKU 73-0162, highlighted reference 7
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60-day returnsEligible unused parts Free ground shippingUSA & Canada over $50
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Honda CB650 CB550 CB500 CB400 CB350 primary chain 23131-426-003

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Load image into Gallery viewer, Honda CB650 CB550 CB500 CB400 CB350 primary chain 23131-426-003
Load image into Gallery viewer, Primary drive chain parts fiche diagram, SKU 73-0162, highlighted reference 7

Honda CB Primary Chain ~ Replaces 23131-426-003

73-0162
$179.95 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 1,345 store reviews
Secure checkoutProtected payment
60-day returnsEligible unused parts Free ground shippingUSA & Canada over $50
Browse all parts
Honda CB Primary Chain ~ Replaces 23131-426-003
$179.95 USD
Description

Replace your CB primary chain with this OEM-Quality Primary Chain, 50 link, replacing OEM #23131-426-003 / #23131-323-003.

Key Features
• Primary chain, OEM quality
• 50 link
• Replaces OEM #23131-426-003 / #23131-323-003
• Honda part name: Chain, Primary Drive (50L) (Tsubakimoto)

Fitment / Compatibility

• Honda CB650 (1979‑82)
• CB650C (1980‑81) Custom
• CB650SC (1982) Nighthawk

• Honda CB500K (1971‑73)
• CB550K (1974‑78)
• CB550F (1975‑77) Supersport

• Honda CB350F (1972‑74) Supersport
• CB400F (1975‑77) Supersport

Part Number: 73-0162

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

Make Model Year
Honda CB650 1979
Honda CB650 1980
Honda CB650 1981
Honda CB650 1982
Honda CB650SC Nighthawk 1982
Honda CB650C Custom 1980
Honda CB650C Custom 1981
Honda CB550K0 1974
Honda CB550K1 1975
Honda CB550K2 1976
Honda CB550K3 1977
Honda CB550K4 1978
Honda CB550F1 1975
Honda CB550F2 1976
Honda CB550F3 1977
Honda CB500K0 1971
Honda CB500K1 1972
Honda CB500K2 1973
Honda CB400F 1975
Honda CB400F 1976
Honda CB400F 1977
Honda CB350F0 1972
Honda CB350F0 1973
Honda CB350F1 1974

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

Which Honda primary-chain references does the 50-link chain replace?

The 50-link OEM-quality primary chain replaces Honda references 23131-426-003 and 23131-323-003 for the listed CB350F, CB400F, CB500K, CB550 and CB650 applications.

Is this 50-link primary chain the rear drive chain or cam chain?

No. It is the internal engine primary chain. It is not the external rear-wheel drive chain and it is not the camshaft timing chain.

What should be inspected while replacing the primary chain?

Inspect the mating sprockets, guides, tensioning components and surrounding bearings for wear, then follow the correct Honda engine service procedure. A new chain will not correct damaged sprockets or excessive play elsewhere.

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