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1980 Honda CB750K Honda Lock Nut Hardware

The fastener listing available for the 1980 CB750K is an individual genuine Honda 16mm lock nut. Use its OEM reference and the applicable assembly diagram to identify the required part. The broad product title covers several Honda applications and is not a location guide.

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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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1980 Honda CB750K · Fasteners & Hardware Buying guide

Confirm the reference for the assembly you have

The listing supplies a particular Honda lock nut with a reference and supersession list. Confirm that reference for the fitted assembly rather than substituting it wherever a similarly sized nut appears during a repair.

Parts to consider

Honda CB 16mm Clutch / Oil Filter Rotor Lock Nut ~ Genuine Honda 90231-KCS-651 ~ Replaces 90231-KCS-651 Genuine Honda lock nutIndividual Honda 16mm lock nut, reference 90231-KCS-651. Confirm the reference and exact assembly location in the relevant parts diagram.View part

Use the specific reference rather than size alone

The lock nut is listed as genuine Honda 90231-KCS-651, with several earlier replacement references. Confirm the required reference in the relevant diagram for the installed assembly. The 16mm description alone does not establish thread details, a universal application or compatibility with every nut position.

Do not carry every title application into this model

The product title combines clutch and oil-filter-rotor applications across multiple Hondas. The description asks buyers to confirm the reference and location in their parts diagram. Follow that distinction for the 1980 CB750K rather than asserting an oil-filter-rotor location solely from the broad listing title.

Common questions

Is the lock nut supplied as a set?

The listing specifies each. Order the individual quantity required for the verified assembly rather than assuming multiple nuts are supplied or that every application in the broad fitment list requires the same quantity.

Does the 16mm description establish complete interchange?

No. Confirm the Honda reference and assembly location against the applicable diagram. A size description alone does not establish thread pitch or suitability for another position, particularly after an engine or clutch assembly has been replaced.

Is this a tool for removing the clutch nut?

This product is installed Honda hardware. A clutch nut removal tool is separate workshop equipment with its own working end and drive requirement. Choose each item by its function rather than treating their names as equivalent.

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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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