Shop by Brand Yamaha OutboardPiston/Piston Kit ; Piston Pin ; Piston Ring Back Piston Kit 656-11631-60 STD Viewer:1439 OEM No. : 656-11631-60-STD For YAMAHA Outboard 20, 25 HP You May Also Be Interested In Piston Pin 663-11633-00-00 Piston Ring 6G0-11610-10 0.25 Cap 6G1-14966-00-00 Throttle Shift Control Cable 24F