Shop by Brand Yamaha OutboardPiston/Piston Kit ; Piston Pin ; Piston Ring Back Piston Kit 6F5-11636-00 0.50 Viewer:874 OEM No. : 6F5-11636-00-0.50 For YAMAHA Outboard 40 HP You May Also Be Interested In Piston Ring 66T-11603-00 STD Piston Kit 6H4-11635-09 0.25 Oil Seal, S-Type 93101-11M23-00 Housing Drive Shaft 56130-96320-0EP