Shop by Brand Yamaha OutboardPiston/Piston Kit ; Piston Pin ; Piston Ring Back Piston Ring 6H4-11610-10-00 0.25 Viewer:1074 OEM No. : 6H4-11610-10-00-0.25 For YAMAHA Outboard 40, 50 HP You May Also Be Interested In Piston Kit 644-11631-03 STD Piston Ring 682-11610-10-00/682-11610-11-00 0.25 Piston Ring 384336/0384336 0.030 Bearing 93310-320U2-00