Shop by Brand Yamaha OutboardPiston/Piston Kit ; Piston Pin ; Piston Ring Back Piston Kit 6J8-11631-02 STD Viewer:738 OEM No. : 6J8-11631-02-STD For YAMAHA Outboard 25, 30 HP You May Also Be Interested In Piston Kit 6E7-11631-00-97 STD Piston Ring 6J8-11601-01-00 STD Drive Shaft-L 3C8-64302-0 Oil Seal, S-Type 93101-10M14-00/93101-11M14-00