Yamaha 4JT-11631-00-C0 - Piston (Std) is a genuine Yamaha part. It is an internal engine component built to Yamaha's specification. Confirm part number 4JT-11631-00-C0 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.
• Size designation Std as listed by Yamaha; confirm the required size with service manual measurements.

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Frequently Asked Questions

What is the Yamaha Piston (Std) (4JT-11631-00-C0)?

The Piston (Std) is a genuine Yamaha part sold under part number 4JT-11631-00-C0. This engine part is one of the internal components that keep the engine running as designed.

What does the Std size on part 4JT-11631-00-C0 mean?

STD indicates the standard-size version of part 4JT-11631-00-C0. Oversize or undersize versions are listed separately for use after machining or when wear calls for them; confirm the size you need using the Yamaha service manual.

Should related parts be replaced with the Piston (Std), part 4JT-11631-00-C0?

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 4JT-11631-00-C0.

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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.