Shop by Brand Yamaha OutboardPiston/Piston Kit ; Piston Pin ; Piston Ring Back Piston Kit 6J8-11631-02 STD Viewer:743 OEM No. : 6J8-11631-02-STD For YAMAHA Outboard 25, 30 HP You May Also Be Interested In Piston Kit 6G5-11636-00 0.50 Piston Ring 61U-11601-00-00 STD Gasket 656-45113-00/656-45113-A0 Drive Gear 385949/0385949(10T)