Shop by Brand Yamaha OutboardPiston/Piston Kit ; Piston Pin ; Piston Ring Back Piston Ring 6H4-11610-20-00 0.50 Viewer:976 OEM No. : 6H4-11610-20-00-0.50 For YAMAHA Outboard 40, 50 HP You May Also Be Interested In Piston Ring 647-11610-10 0.25 Piston Kit 696-11631-00 STD Bearing 9601-0-6000/960106000M Plunger, Shift 650-45635-00-00