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1981 Honda CB750K Clutch Lock Nut Hardware

The available hardware is a Honda lock nut, sold each. The description groups clutch and oil-filter-rotor uses across several motorcycles. For your CB750K, identify the actual assembly and confirm its part reference before treating the broad title as a location-specific fitment instruction.

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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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1981 Honda CB750K · Fasteners & Hardware Buying guide

Identify the nut’s location before matching it

The product is described as a genuine Honda 16mm lock nut. Its listing asks buyers to confirm the part number and location, especially where the engine or clutch assembly has changed.

Parts to consider

Honda CB 16mm Clutch / Oil Filter Rotor Lock Nut ~ Genuine Honda 90231-KCS-651 ~ Replaces 90231-KCS-651 Honda clutch and rotor lock nutListed as genuine Honda reference 90231-KCS-651 and sold each. Confirm the application in the relevant assembly diagram before ordering.View part

Keep the application specific

The seller lists a broad range of Honda motorcycles and more than one assembly type. That does not mean every named motorcycle uses the nut in every listed location. Check the part reference for the component you are repairing and avoid transferring an oil-filter-rotor application from another model.

One hardware item is not a repair kit

The listing states each and describes a commonly required quantity of one where used. Use the actual assembly to decide quantity and any associated parts. The product is a replacement nut; the wording does not establish a package of washers, locking devices or removal tools.

Common questions

What does the 16mm description tell me?

It is the size stated by this product listing. It does not provide a thread-pitch specification or every dimension needed to identify an unfamiliar nut. Match the Honda reference and component location as well as the physical part.

Is this a pack of lock nuts?

The listing states that the product is sold each. Its commonly required quantity is conditional on where it is used. Confirm your assembly and quantity before ordering rather than assuming the listing supplies a complete set.

Can I choose it solely from the clutch and rotor title?

Use the title to locate the listing, then verify the specific component and Honda part reference. The description itself recommends checking a parts diagram or service manual, particularly if the engine or clutch has been replaced.

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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