Shop by Brand Yamaha OutboardPiston/Piston Kit ; Piston Pin ; Piston Ring Back Piston Ring 647-11610-20 0.50 Viewer:807 OEM No. : 647-11610-20-0.50 For YAMAHA Outboard 8 HP You May Also Be Interested In Piston Ring 6H4-11601-20 0.50 Piston Kit 646-11631-01 STD Damper, Water Seal 647-44366-00-00 Thrust Holder, Propeller 369-64231-0/369642310M/369-64231-1/369642311M