Shop by Brand Yamaha OutboardPiston/Piston Kit ; Piston Pin ; Piston Ring Back Piston Ring 6H4-11601-20 0.50 Viewer:923 OEM No. : 6H4-11601-20-0.50 For YAMAHA Outboard 40, 50 HP You May Also Be Interested In Piston Kit 61A-11631-02 STD Piston Kit 61N-11636-00 0.50 Screw, Impeller Housing 302325/0302325 Bearing 09263-18015-000