Shop by Brand Yamaha OutboardPiston/Piston Kit ; Piston Pin ; Piston Ring Back Piston Ring 6H4-11601-20 0.50 Viewer:926 OEM No. : 6H4-11601-20-0.50 For YAMAHA Outboard 40, 50 HP You May Also Be Interested In Piston Kit 6H1-11636-03 0.50 Piston Kit 670-11631-01 STD Connecting Rod 647-822373A09/822373A09 Lower Unit Gasket Kit 67C-W0001-21-00