Shop by Brand Yamaha OutboardPiston/Piston Kit ; Piston Pin ; Piston Ring Back Piston Ring 6H4-11610-20-00 0.50 Viewer:988 OEM No. : 6H4-11610-20-00-0.50 For YAMAHA Outboard 40, 50 HP You May Also Be Interested In Piston Kit 689-11631-60 STD Piston Kit 6F6-11635-00 0.25 Water Pump Impeller Kit 63D-W0078-00-F Impeller 432941/0432941