Yamaha 7FK-11631-09-A0 - Piston (Std) is a genuine Yamaha part. It replaces a worn or damaged engine component with the specified Yamaha part. Ordering by part number 7FK-11631-09-A0 ensures you receive the exact component Yamaha lists for its location.

---

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 Std as listed by Yamaha; confirm the required size with service manual measurements.
• Sold under Yamaha part number 7FK-11631-09-A0.

---

Frequently Asked Questions

What part does Yamaha number 7FK-11631-09-A0 refer to?

Yamaha number 7FK-11631-09-A0 identifies the Piston (Std), a genuine Yamaha part. It is an internal engine component built to Yamaha's specification.

What does the Std size on part 7FK-11631-09-A0 mean?

STD indicates the standard-size version of part 7FK-11631-09-A0. 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 7FK-11631-09-A0?

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 7FK-11631-09-A0.

---

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.