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1970 Honda CB750K Genuine Honda Clutch Lock Nut Hardware

The hardware choice for the 1970 Honda CB750K is a genuine Honda 16mm lock nut with a specific part reference. Match that reference to the clutch assembly and diagram location on your engine before ordering, particularly if the fitted assembly has been replaced or modified.

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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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1970 Honda CB750K · Fasteners & Hardware Buying guide

Use the Honda reference to identify the exact lock nut

The catalog lists several superseded references and a broad range of compatible assemblies. Check the nut at the identified diagram location, rather than selecting small engine hardware by its size or a general model-year category alone.

Choose the part for your repair

Honda CB 16mm Clutch / Oil Filter Rotor Lock Nut ~ Genuine Honda 90231-KCS-651 ~ Replaces 90231-KCS-651 Genuine Honda 16mm lock nutHonda reference 90231-KCS-651, sold each; confirm the superseded reference and exact application in the assembly diagram.View part

Use the reference rather than a size alone

The listing identifies genuine Honda reference 90231-KCS-651 and provides several earlier references it replaces. Confirm the relevant reference and position in the parts diagram for the fitted engine. The 16mm description is useful information, but it does not identify every nut location or establish another assembly application by itself.

Treat a changed clutch as a separate check

The buyer notes call for checking the part number and location where the engine or clutch assembly has changed. Follow that check before ordering from the model category. The nut is sold each, so the required quantity should follow the actual diagram location rather than a broad assumption about multiple engine uses.

Fasteners & Hardware: buying questions

What Honda reference is given for the nut?

The listed genuine Honda reference is 90231-KCS-651, with several superseded references identified in the product description. Match the appropriate reference to the location in your fitted assembly diagram before choosing this replacement hardware.

Is the nut supplied as a hardware set?

No. The sales unit is each. Check the quantity needed at the identified location in the correct parts diagram, rather than assuming the listing includes multiple nuts or a complete set for a clutch service job.

Does the broad product title confirm every rotor application?

No. The catalog description covers several Honda models and assembly uses. Confirm the reference and exact location for the fitted engine; a broad clutch or rotor label is not sufficient evidence for every application on a particular CB750K.

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