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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...

1983 Honda CB750SC · Clutch Retaining Nut Buying guide

Identify the nut by reference and position

The nut carries reference 90231-KCS-651 with listed replacement references. Confirm its place in the clutch assembly and inspect the mating threads before selecting it as the required retaining-hardware replacement.

Use the complete part identification

The genuine Honda nut is sold each. Compare the reference and locking design with the removed component rather than relying only on a nominal 16mm description. Keep the associated washers and other retaining pieces identified separately during inspection and ordering.

Check a previously changed clutch

An exchanged engine or rebuilt clutch may contain components differing from the original arrangement. Identify the installed assembly before choosing hardware. Follow the correct service procedure for locking and tightening after the replacement part has been positively matched.

Clutch Retaining Nut questions

Is the featured nut genuine Honda?

The product identifies it as genuine Honda, reference 90231-KCS-651. Match the original position and its listed replacement references before choosing it for the clutch repair.

Is it sold as part of a hardware kit?

It is supplied individually. Determine the retaining parts required from the actual clutch inspection rather than expecting a nut purchase to include surrounding washers or other hardware.

Does the 16mm specification establish fit by itself?

No. Compare the exact reference, thread and locking arrangement as well as its position in the clutch. This matters particularly when the engine or clutch has been changed.

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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