Yamaha J38-W4640-10-00 - Differential Gear & Pinion Set is a genuine Yamaha part. It replaces a worn or damaged engine component with the specified Yamaha part. Confirm part number J38-W4640-10-00 against your Yamaha parts diagram before ordering.

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Key Features & Benefits

• Built to Yamaha's specification for its engine location.
• Replaces worn, scored, or damaged engine components.
• Installs in the position shown in the Yamaha engine parts diagram.

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Frequently Asked Questions

Is J38-W4640-10-00 a genuine Yamaha part?

Yes. J38-W4640-10-00 is the Yamaha part number for the Differential Gear & Pinion Set. It is an internal engine component built to Yamaha's specification.

Should related parts be replaced with the Differential Gear & Pinion Set (J38-W4640-10-00)?

When replacing engine internals, inspect mating parts and replace gaskets and seals disturbed during disassembly. Refer to the Yamaha service manual for your model when installing J38-W4640-10-00.

How do I confirm J38-W4640-10-00 fits my Yamaha?

Model fitment is not listed for part J38-W4640-10-00 on this page. Compare the part number against the Yamaha parts diagram for your model and year, or confirm with a Yamaha dealer using your model or VIN before ordering.

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WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.