Yamaha 7X9-11636-01-00 - Piston (2ND O-S) is a genuine Yamaha part. This engine part is one of the internal components that keep the engine running as designed. Ordering by part number 7X9-11636-01-00 ensures you receive the exact component Yamaha lists for its location.

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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.
• Size designation 2ND O-S as listed by Yamaha; confirm the required size with service manual measurements.
• Sold under Yamaha part number 7X9-11636-01-00.

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Frequently Asked Questions

What is the Yamaha Piston (2ND O-S) (7X9-11636-01-00)?

The Piston (2ND O-S) is a genuine Yamaha part sold under part number 7X9-11636-01-00. It replaces a worn or damaged engine component with the specified Yamaha part.

What does the 2ND O-S size on part 7X9-11636-01-00 mean?

O-S marks an oversize part and U-S an undersize part. Yamaha lists 7X9-11636-01-00 as 2ND 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.

Where does the Piston (2ND O-S), part 7X9-11636-01-00, fit in the engine?

The Piston (2ND O-S) installs in the engine location shown for part 7X9-11636-01-00 in the Yamaha parts diagram for your model.

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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.