Yamaha 7A9-11610-11-00 - Ring Piston Set (1ST O-S) is a genuine Yamaha part. It is an internal engine component built to Yamaha's specification. Match part number 7A9-11610-11-00 to the Yamaha parts diagram for your model to confirm it is the component you need.

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Key Features & Benefits

• Installs in the position shown in the Yamaha engine parts diagram.
• Built to Yamaha's specification for its engine location.
• Replaces worn, scored, or damaged engine components.
• 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 part does Yamaha number 7A9-11610-11-00 refer to?

Yamaha number 7A9-11610-11-00 identifies the Ring Piston Set (1ST O-S), a genuine Yamaha part. This engine part is one of the internal components that keep the engine running as designed.

What does the 1ST O-S size on part 7A9-11610-11-00 mean?

O-S marks an oversize part and U-S an undersize part. Yamaha lists 7A9-11610-11-00 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.

Which Yamaha models use the Ring Piston Set (1ST O-S), part 7A9-11610-11-00?

Model and year fitment data is not listed for 7A9-11610-11-00 on this page. Look up your model's Yamaha parts diagram and confirm that it lists part 7A9-11610-11-00 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.