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1979 Honda CB750K Honda Lock Nut & Hardware

The hardware route for the 1979 CB750K currently has one lock nut listing with broad Honda applications. Start from the assembly you are repairing and its parts reference. The category does not establish a particular clutch position or an oil-filter-rotor application on this motorcycle.

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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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1979 Honda CB750K · Fasteners & Hardware Buying guide

Verify the reference before assigning the nut to an assembly

The product identifies genuine Honda reference 90231-KCS-651, describes a 16 mm lock nut and states individual sale. Its multi-model description needs an assembly-specific reference check before a replacement position is claimed.

Parts to consider

Honda CB 16mm Clutch / Oil Filter Rotor Lock Nut ~ Genuine Honda 90231-KCS-651 ~ Replaces 90231-KCS-651 Genuine Honda nut — 90231-KCS-651Listed as a 16 mm lock nut, sold individually. Verify the reference and position in the assembly being repaired.View part

Broad listing wording needs a precise parts check

The description combines clutch and oil-filter-rotor uses across several Honda families. This guide does not assign that combined wording to a specific 1979 CB750K position. Use the part reference in the correct assembly diagram or obtain a compatibility check before treating it as the nut your repair requires.

Match a changed engine or assembly to its own reference

An engine or assembly replacement can leave the motorcycle’s model label unchanged while changing individual hardware requirements. Identify the parts fitted now. Compare the existing nut and the replacement reference, and ask for help if the required position cannot be established from the available information.

Common questions

What number identifies the offered Honda nut?

Its listed reference is 90231-KCS-651. The description calls it a 16 mm lock nut and lists multiple Honda applications. Verify that reference for the actual assembly you are repairing before deciding that it is the required replacement.

Does the listing prove an oil-filter-rotor location on this bike?

No exact 1979 CB750K position is established by its broad multi-model wording. Do not transfer another model’s component application to this motorcycle. Confirm the nut’s reference and location in the relevant parts information before ordering.

How is the lock nut sold?

The product description states individual sale. Order the quantity required after verifying the assembly and reference. A multi-model fitment list is not a pack-content statement and does not mean that several nuts or other hardware are included.

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Send your model and year, plus photos of your existing part and any changes to the original setup.

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