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1966 Honda CB160 Fasteners & Hardware

The genuine Honda 16 mm locknut is an individually supplied replacement for listed CB160 applications, including 1966. Use reference 90231-KCS-651 and the earlier numbers it replaces to identify the part, then confirm the service position on the engine being repaired.

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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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1966 Honda CB160 · Fasteners & Hardware Buying guide

Identify the locknut by reference and assembly position

A current Honda number can differ from the number in an older parts book. Compare the listed replacement references before rejecting or selecting the nut, and keep the exact assembly position with your parts request.

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 locknutGenuine Honda 90231-KCS-651 locknut, sold individually. The listed application includes the 1966 CB160; match the reference to the assembly being serviced.View part

Compare the current and older Honda references

The listed replacements for 90231-KCS-651 include 90231-200-010, 90231-028-000, 90231-030-000, 90231-703-000, 90231-KCS-920, 90232-700-000 and 90231-200-000. If your parts book gives one of these numbers, retain the assembly details when checking the order. A different older number still needs a separate match.

Keep the order tied to the specific repair

The product is sold each. Establish how many are needed at the verified service location rather than applying a general quantity across the motorcycle. Use the applicable service manual for the removal and installation method; no tightening value or tool size should be inferred from the product’s nominal dimension.

Fasteners & Hardware questions

My parts book shows 90231-200-010. Is that an earlier reference?

Yes. 90231-200-010 is among the references replaced by the listed Honda 90231-KCS-651 locknut. Check the assembly position as well, especially if an earlier engine or different clutch components have been fitted.

How many locknuts are supplied with one order?

One locknut is supplied per item ordered. Determine the quantity needed from the verified assembly and repair scope; do not assume the broad clutch and oil-filter-rotor description means one nut for each named system.

Can a matching diameter replace a missing part-number match?

Use the Honda reference and assembly details to identify this nut. A diameter alone does not establish the thread or application of an alternative; ask for a reference match if your older number is not listed.

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

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