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1973 Honda CB750K Lock Nut & Hardware

This populated 1973 CB750K hardware selection currently contains one Honda lock nut listing. Its description covers several motorcycle families and component applications. Confirm the reference number and location in your own parts diagram before ordering, especially if the engine or assembly has changed.

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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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1973 Honda CB750K · Fasteners & Hardware Buying guide

Confirm the lock nut by reference and assembly location

The listing identifies a genuine Honda 16 mm lock nut, reference 90231-KCS-651, sold individually. Its broad application wording does not by itself identify a particular position on your 1973 CB750K.

Parts to consider

Honda CB 16mm Clutch / Oil Filter Rotor Lock Nut ~ Genuine Honda 90231-KCS-651 ~ Replaces 90231-KCS-651 Honda lock nut — 90231-KCS-651Genuine Honda 16 mm lock nut, sold individually. Confirm the reference and exact application in your parts diagram.View part

Use the part reference to settle the application

The description combines clutch and oil-filter-rotor applications across several Honda models. Do not transfer a component location from one model to another. For this motorcycle, verify the reference in the parts information for the actual assembly before treating the nut as the required replacement.

Check a changed assembly independently

A motorcycle may still be identified as a 1973 CB750K after an engine or component swap. That year label does not identify every installed fastener. Compare the nut, reference and assembly details you have. If the match is uncertain, ask for a check before placing the order.

Common questions

Which Honda reference is listed for this nut?

The product identifies Honda reference 90231-KCS-651 and describes a 16 mm lock nut. Match the reference to your assembly’s parts information before ordering; a motorcycle category tag alone does not identify its exact fitted position.

Does this guide identify its location on my CB750K?

No exact CB750K component location is asserted here. The listing combines multiple model applications, including clutch and oil-filter-rotor wording. Verify the reference and position in your motorcycle’s parts diagram or ask for help before ordering.

Is the lock nut supplied as a set?

The listing states that the nut is sold individually. Confirm the quantity needed for your verified assembly and order that number. Do not assume that a single product listing includes a set of nuts or other hardware.

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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