Yamaha 796-11635-03-00 - Piston (1ST O-S) 65.25MM is a genuine Yamaha part. This engine part is one of the internal components that keep the engine running as designed. Use part number 796-11635-03-00 to confirm it matches the component shown in your model's Yamaha parts diagram.

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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 1ST O-S as listed by Yamaha; confirm the required size with service manual measurements.

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Frequently Asked Questions

What is Yamaha part 796-11635-03-00?

796-11635-03-00 is the Yamaha part number for the Piston (1ST O-S) 65.25MM, a genuine Yamaha part. It replaces a worn or damaged engine component with the specified Yamaha part.

What does the 1ST O-S size on part 796-11635-03-00 mean?

O-S marks an oversize part and U-S an undersize part. Yamaha lists 796-11635-03-00 as 1ST 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 (1ST O-S) 65.25MM (796-11635-03-00) fit in the engine?

The Piston (1ST O-S) 65.25MM installs in the engine location shown for part 796-11635-03-00 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.