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  • 1970-72 Honda CB750K / CB450K Fork Seal Backup Rings (Pk/2) ~ Replaces 51452-319-010
Honda CB750K CB450K fork seal backup rings (pk 2) 51452-319-010
Fork seal backup rings parts fiche diagram, SKU 73-1037, highlighted reference 14
1970-72 Honda CB750K / CB450K Fork Seal Backup Rings (Pk/2) ~ Replaces 51452-319-010
1970-72 Honda CB750K / CB450K Fork Seal Backup Rings (Pk/2) ~ Replaces 51452-319-010
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60-day returnsEligible unused parts Free ground shippingUSA & Canada over $50
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Honda CB750K CB450K fork seal backup rings (pk 2) 51452-319-010

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Load image into Gallery viewer, Honda CB750K CB450K fork seal backup rings (pk 2) 51452-319-010
Load image into Gallery viewer, Fork seal backup rings parts fiche diagram, SKU 73-1037, highlighted reference 14
Load image into Gallery viewer, 1970-72 Honda CB750K / CB450K Fork Seal Backup Rings (Pk/2) ~ Replaces 51452-319-010
Load image into Gallery viewer, 1970-72 Honda CB750K / CB450K Fork Seal Backup Rings (Pk/2) ~ Replaces 51452-319-010
5.0 ( 1 review)

1970-72 Honda CB750K / CB450K Fork Seal Backup Rings (Pk/2) ~ Replaces 51452-319-010

73-1037
$9.95 USD

Sold as a pack of 2

In stock Usually ships the same or next business day
Check model fitment View fitment
Questions about this part? Contact us 4.8/5 1,332 store reviews
Secure checkoutProtected payment
60-day returnsEligible unused parts Free ground shippingUSA & Canada over $50
Browse all parts

1 product reviews

1970-72 Honda CB750K / CB450K Fork Seal Backup Rings (Pk/2) ~ Replaces 51452-319-010

1970-72 Honda CB750K / CB450K Fork Seal Backup Rings (Pk/2) ~ Replaces 51452-319-010
$9.95 USD
Description

Replace your fork seal backup rings with this Fork Seal Backup Rings Pk/2, replacing OEM #51452-319-010. These rings go above the fork seals.

Key Features
• Fork seal backup rings
• Pack of 2
• Goes above the fork seals
• Replaces OEM #51452-319-010

Fitment / Compatibility

• Honda CB750K (1971‑72)

• Honda CB450K (1970‑71)

Part Number: 73-1037

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

Make Model Year
Honda CB750K 1971
Honda CB750K 1972
Honda CB450K3 1970
Honda CB450K4 1971

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

Where do fork backup rings 51452-319-010 install?

The two rings install above the fork oil seals on the compatible early CB750K and CB450K fork assemblies. They replace Honda OEM 51452-319-010.

How many fork-seal backup rings are included?

Two rings are included, enough for the left and right fork legs on one compatible motorcycle.

What should be inspected during fork-seal service?

Check both fork tubes for rust or scoring, clean the seal grooves and inspect the retaining clips, bushings and dust protection. Install the rings in the Honda-specified order and verify both forks move smoothly without leakage.

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