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  • Honda CB 16mm Clutch / Oil Filter Rotor Lock Nut ~ Genuine Honda 90231-KCS-651 ~ Replaces 90231-KCS-651
Honda CB1100 CB1000 CB900 CB750 16mm clutch oil filter rotor lock nut 90231-KCS-651
Clutch lock nut, SKU 99-5383: product photo and reviewed parts fiche. Example diagram; check listing for fitment.
Honda CB1100 CB1000 CB900 CB750 16mm clutch oil filter rotor lock nut 90231-KCS-651
Honda CB1100 CB1000 CB900 CB750 16mm clutch oil filter rotor lock nut 90231-KCS-651
Honda CB1100 CB1000 CB900 CB750 16mm clutch oil filter rotor lock nut 90231-KCS-651
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Honda CB1100 CB1000 CB900 CB750 16mm clutch oil filter rotor lock nut 90231-KCS-651

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Load image into Gallery viewer, Honda CB1100 CB1000 CB900 CB750 16mm clutch oil filter rotor lock nut 90231-KCS-651
Load image into Gallery viewer, Clutch lock nut, SKU 99-5383: product photo and reviewed parts fiche. Example diagram; check listing for fitment.
Load image into Gallery viewer, Honda CB1100 CB1000 CB900 CB750 16mm clutch oil filter rotor lock nut 90231-KCS-651
Load image into Gallery viewer, Honda CB1100 CB1000 CB900 CB750 16mm clutch oil filter rotor lock nut 90231-KCS-651
Load image into Gallery viewer, Honda CB1100 CB1000 CB900 CB750 16mm clutch oil filter rotor lock nut 90231-KCS-651

Honda CB 16mm Clutch / Oil Filter Rotor Lock Nut ~ Genuine Honda 90231-KCS-651 ~ Replaces 90231-KCS-651

99-5383
$10.95 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
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Honda CB 16mm Clutch / Oil Filter Rotor Lock Nut ~ Genuine Honda 90231-KCS-651 ~ Replaces 90231-KCS-651
$10.95 USD
Description

This genuine Honda 16mm lock nut is used on compatible Honda CB clutch basket and oil filter rotor assemblies. It is a small hardware part, but it matters when you are servicing clutch or oil filter rotor components and want the correct factory-style Honda lock nut instead of reusing a worn or damaged one.

Key Features
• Genuine Honda OEM part
• Honda OEM number: 90231-KCS-651
• Replaces / supersedes: 90231-200-010, 90231-028-000, 90231-030-000, 90231-703-000, 90231-KCS-920, 90232-700-000, 90231-200-000
• 16mm lock nut for clutch basket and oil filter rotor applications
• Sold as: each
• Quantity required: commonly 1 where used

Fitment / Compatibility
• Honda CB1100F (1983)
• CB1000C (1983)
• CB900C (1980-1982)
• CB900F (1981-1982)
• CB750C (1980-1982)
• CB750F (1975-1982)
• CB750K (1969-1982)
• CB750L (1979)
• CB750SC (1982-1983)
• CB400F (1975-1977)
• CB360G (1974)
• CB360K0 (1974)
• CB360T (1975-1976)
• CB350G (1973)
• CB350K (1968-1972)
• CB175K (1969-1973)
• CB160 (1966-1969)
• CB125S (1984-1985)
• CB92 (1959-1962)

Buyer Notes
Confirm the part number and location in your motorcycle's parts diagram or service manual before ordering, especially if the engine or clutch assembly has been changed.

Read More
Read Less

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

Make Model Year
Honda CB1100F Supersport 1983
Honda CB1000C Custom 1983
Honda CB900C Custom 1980
Honda CB900C 1981
Honda CB900C 1982
Honda CB900F Supersport 1981
Honda CB900F 1982
Honda CB750C Custom 1980
Honda CB750C 1981
Honda CB750C 1982
Honda CB750F Supersport 1975
Honda CB750F 1976
Honda CB750F 1977
Honda CB750F 1978
Honda CB750F Supersport 1979
Honda CB750F 1980
Honda CB750F 1981
Honda CB750F 1982
Honda CB750K Standard 1969
Honda CB750K 1970
Honda CB750K 1971
Honda CB750K 1972
Honda CB750K 1973
Honda CB750K 1974
Honda CB750K 1975
Honda CB750K 1976
Honda CB750K 1977
Honda CB750K 1978
Honda CB750K Standard 1979
Honda CB750K 1980
Honda CB750K 1981
Honda CB750K 1982
Honda CB750L Limited 1979
Honda CB750SC Nighthawk 1982
Honda CB750SC 1983
Honda CB400F 1975
Honda CB400F 1976
Honda CB400F 1977
Honda CB360G 1974
Honda CB360K0 1974
Honda CB360T 1975
Honda CB360T 1976
Honda CB350G 1973
Honda CB350K0 1968
Honda CB350K1 1969
Honda CB350K2 1970
Honda CB350K3 1971
Honda CB350K4 1972
Honda CB175K3 1969
Honda CB175K4 1970
Honda CB175K1 1971
Honda CB175K6 1972
Honda CB175K7 1973
Honda CB160 1966
Honda CB160 1967
Honda CB160 1968
Honda CB160 1969
Honda CB125S 1984
Honda CB125S 1985
Honda CB92 1959
Honda CB92 1960
Honda CB92 1961
Honda CB92 1962

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

What does genuine Honda lock nut 90231-KCS-651 fit?

It is a 16mm lock nut used at the specified clutch or centrifugal oil-filter rotor position on compatible Honda CB applications. Match OEM 90231-KCS-651 and the service-manual location before ordering.

How many 16mm lock nuts are included?

One genuine Honda lock nut is included, enough for one specified shaft location where OEM 90231-KCS-651 is required.

Can the old lock nut be reused?

Follow the Honda service manual. If the nut is staked, deformed, damaged or designated single-use, install the new nut and tighten and lock it by the specified procedure.

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