Yamaha BYS-E1631-00-00 - Piston (Std) is a genuine Yamaha part. This engine part is one of the internal components that keep the engine running as designed. Confirm part number BYS-E1631-00-00 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 Std as listed by Yamaha; confirm the required size with service manual measurements.

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Frequently Asked Questions

What is Yamaha part BYS-E1631-00-00?

BYS-E1631-00-00 is the Yamaha part number for the Piston (Std), a genuine Yamaha part. It replaces a worn or damaged engine component with the specified Yamaha part.

What does the Std size on part BYS-E1631-00-00 mean?

STD indicates the standard-size version of part BYS-E1631-00-00. 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 BYS-E1631-00-00?

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 BYS-E1631-00-00.

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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.