Shop by Brand Yamaha OutboardPiston/Piston Kit ; Piston Pin ; Piston Ring Back Piston Kit 6J8-11631-02 STD Viewer:739 OEM No. : 6J8-11631-02-STD For YAMAHA Outboard 25, 30 HP You May Also Be Interested In Piston Ring 63D-11604-00-00 0.25 Piston Ring 64D-11605-00-00 0.50 Diaphragm 677-24411-00-00/677-24411-01-00/677-24411-02-00 Jet 676-14948-18