Yamaha JN6-11635-00-00 - Piston (0.25MM O-S) is a genuine Yamaha part. It replaces a worn or damaged engine component with the specified Yamaha part. Confirm part number JN6-11635-00-00 against your Yamaha parts diagram before ordering.

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Key Features & Benefits

• Replaces worn, scored, or damaged engine components.
• Installs in the position shown in the Yamaha engine parts diagram.
• Built to Yamaha's specification for its engine location.
• Size designation 0.25MM O-S as listed by Yamaha; confirm the required size with service manual measurements.
• Sold under Yamaha part number JN6-11635-00-00.

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Frequently Asked Questions

What is the Yamaha Piston (0.25MM O-S) (JN6-11635-00-00)?

The Piston (0.25MM O-S) is a genuine Yamaha part sold under part number JN6-11635-00-00. It is an internal engine component built to Yamaha's specification.

What does the 0.25MM O-S size on part JN6-11635-00-00 mean?

O-S marks an oversize part and U-S an undersize part. Yamaha lists JN6-11635-00-00 as 0.25MM O-S, which is used when the mating part has been machined or worn to match. Measure and confirm the required size using the Yamaha service manual.

How do I confirm JN6-11635-00-00 fits my Yamaha?

Model fitment is not listed for part JN6-11635-00-00 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.