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1973 Honda CB350G Oil Rotor Lock Nut

The CB350G centrifugal oil-filter rotor uses a 16 mm lock nut, while the clutch centre has a retaining circlip. Match this genuine Honda replacement to the rotor assembly and supported reference before ordering an individual nut for engine service.

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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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1973 Honda CB350G · Oil Rotor Lock Nut Buying guide

Identify the oil-filter-rotor lock nut

Genuine Honda 90231-KCS-651 is sold individually and lists the CB350G application. Use the rotor position and the supported replacement references together; do not mistake the broad product name for a clutch-centre lock nut on this engine.

Parts to consider

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

Use the replacement reference carefully

The current Honda number is 90231-KCS-651, with earlier references including 90231-200-010 and 90231-028-000 in the product information. Compare the reference and rotor assembly being serviced. The catalog’s broad clutch/oil-filter description spans other engines and should not define the CB350G mounting position.

Plan the tool separately

This order supplies the lock nut itself. Identify the correct special-tool engagement and holding procedure from the CB350G service information before starting work. The 16 mm description of the nut should not be confused with a removal tool’s working diameter or drive size.

Buying questions

Is this genuine Honda hardware?

Yes. The product is identified as genuine Honda 90231-KCS-651 and is sold individually. Use the correct parts reference and assembly position to confirm the item needed for the job.

Does one order supply more than one nut?

No. The lock nut is sold as an individual piece. Establish the requirement for the exact engine assembly rather than assuming the general description specifies a multi-piece package.

Can I choose a removal tool from the 16 mm description alone?

No. A tool must match the nut’s engagement profile as well as the intended service procedure. Its working diameter and square-drive size are different specifications from the nut’s 16 mm description.

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