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Honda CB750 CB550 CB650 cylinder head nut cover 91318-300-013
Honda CB750 / CB550 / CB650 Cylinder Head Nut Cover, SKU 01-0137: product photo and reviewed parts fiche. Example diagram; check listing for fitment.

Honda CB750 / CB550 / CB650 Cylinder Head Nut Cover

01-0137
$3.74 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

$3.74 USD

Restore the clean look of your cylinder head with this Rubber Cylinder Head Nut Cover, a replacement for OEM Ref. #91318-300-013. Fits all 1969-78 CB750 models along with the CB500, CB550, and CB650 lineups, covering the exposed head nuts for a proper factory appearance.

Six covers are used per bike. Sold individually so you can order the count you need for a full refresh or a partial replacement.

Key Features
• Replaces OEM #91318-300-013
• Rubber construction
• 6 covers used per bike
• Sold each (order quantity needed)

Fitment / Compatibility

• All Honda CB750 models (1969‑78)


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


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

Part Number: 01-0137

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

Honda motorcycle models and years listed for this part
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 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

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.

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 is the cylinder-head nut cover sold and how many are needed?

The rubber nut cover is sold individually, and six are required to replace the complete set on one engine.

Which Honda OEM number does the nut cover replace?

The cover replaces Honda OEM number 91318-300-013.

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