Shop by Brand Yamaha OutboardPiston/Piston Kit ; Piston Pin ; Piston Ring Back Piston Ring 6H4-11610-20-00 0.50 Viewer:998 OEM No. : 6H4-11610-20-00-0.50 For YAMAHA Outboard 40, 50 HP You May Also Be Interested In Piston 6L2-11636-00-00 0.50 Piston Kit 6J8-11635-02-00 0.25 Lower Unit Gasket Set 361-87321-0/361873210M Coil Ignition 6E7-85570-19-00