Shop by Brand Yamaha OutboardPiston/Piston Kit ; Piston Pin ; Piston Ring Back Piston Kit 6J8-11631-02 STD Viewer:730 OEM No. : 6J8-11631-02-STD For YAMAHA Outboard 25, 30 HP You May Also Be Interested In Piston Ring 675-11610-00 STD Piston Ring 647-11610-00-00 STD Gasket, Upper Casing 68F-45113-00-00 Bearing 388344/0388344/437088/0437088