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1972 Honda CB175K6 Clutch & Rotor Lock Nut

Order an internal lock nut against the exact assembly being serviced. This 16 mm product is sold individually under Honda reference 90231-KCS-651, with several catalog supersessions. For a 1972 CB175K6 repair, verify the position and fitted components before treating that reference as the right replacement.

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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

$10.95 USD
99-5383
This genuine Honda 16mm lock nut is used on compatible Honda CB clutch basket and oil filter rotor assemblies. It is a small hardware...
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1972 Honda CB175K6 · Clutch & Rotor Lock Nut Buying guide

Confirm the assembly before choosing the lock nut

This genuine Honda nut serves clutch and oil-filter-rotor applications across several Honda models. That breadth makes the actual position and replacement-reference check important; it does not establish two installation locations on this particular engine.

Parts to consider

Honda CB 16mm Clutch / Oil Filter Rotor Lock Nut ~ Genuine Honda 90231-KCS-651 ~ Replaces 90231-KCS-651 Genuine Honda 16 mm lock nutGenuine Honda 90231-KCS-651, sold individually; match the required clutch or rotor position.View part

Verify the reference at the installed position

Genuine Honda 90231-KCS-651 supersedes 90231-200-010, 90231-028-000, 90231-030-000, 90231-703-000, 90231-KCS-920, 90232-700-000 and 90231-200-000. Use the appropriate parts information to match the reference and position on the fitted assembly. Do not infer an engine-wide count from those seven references.

Keep package and installation counts separate

The nut is sold each. Decide the quantity from the verified positions involved in the service job rather than interpreting the product’s broad clutch-and-rotor description as a per-bike count. Use the appropriate service information for the required tool and refitting procedure once the part is identified.

Buying questions

Does one purchase supply more than one nut?

The product is sold individually. Confirm the assembly position and the number of parts being replaced before ordering; the broad application description does not establish a multi-nut package.

Is this genuine Honda or replica hardware?

It is identified as genuine Honda 90231-KCS-651. The earlier superseded references help identify the replacement; still confirm the position when servicing a substituted engine or clutch assembly.

What if the clutch or engine has been replaced?

Identify the assembly currently fitted and check its parts information before ordering. The motorcycle’s original model label cannot establish which lock nut a substituted engine or clutch assembly requires.

Not sure which part you need?

Send your model and year, plus photos of your existing part and any changes to the original setup.

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