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1977 Honda CB750K Genuine Honda Clutch Lock Nut

The fastener offered here for the 1977 Honda CB750K is the genuine Honda 16mm clutch lock nut referenced to 90231-KCS-651. The 1977 clutch diagram identifies the earlier 90231-200-010 reference. Compare the clutch assembly and diagram location before selecting the individually sold replacement.

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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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1977 Honda CB750K · Fasteners & Hardware Buying guide

Confirm the clutch diagram location before replacing the nut

The supplier lists this genuine Honda nut as 90231-KCS-651 with CB750K compatibility. Confirm the required reference and location for the assembly actually fitted before ordering; the broad product application does not independently verify a specific 1977 diagram position.

Parts to consider

Honda CB 16mm Clutch / Oil Filter Rotor Lock Nut ~ Genuine Honda 90231-KCS-651 ~ Replaces 90231-KCS-651 Genuine Honda clutch lock nutGenuine Honda 16mm lock nut, reference 90231-KCS-651, sold individually. Confirm the part number and assembly location before ordering.View part

Confirm the assembly location from the correct parts information

The supplier describes clutch-basket and oil-filter-rotor applications across a broad Honda model list. That description does not establish both uses on the 1977 CB750K. Match reference 90231-KCS-651 and the actual assembly against appropriate parts information before selecting the nut.

Keep the nut and its tool specifications separate

The product’s 16mm description identifies the nut; it is not a universal instruction to use a 16mm wrench or the dimension of a particular service tool. Compare the actual nut profile, diagram and tool listing. Use the correct service manual for retention, assembly sequence and tightening requirements.

Fasteners & Hardware: buying questions

What should I match if the engine or clutch has been replaced?

Start with the installed assembly and its parts information. The supplier identifies Honda 90231-KCS-651 and advises confirming the part number and location, particularly after engine or clutch changes. The motorcycle’s registration year alone does not identify exchanged hardware.

Does the broad oil-filter wording describe a CB750K filter repair?

The product title spans clutch-basket and oil-filter-rotor uses across different motorcycles. It does not establish an oil-filter-rotor application on this CB750K. Confirm the required part number and location for the assembly being repaired rather than choosing from the broad title alone.

Is one purchase a hardware assortment?

No. The listing supplies an individual genuine Honda lock nut. It does not establish washers, a locking tool or a complete clutch hardware set as included. Order the quantity required and assess other service components separately.

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