Shop by Brand Yamaha OutboardPiston/Piston Kit ; Piston Pin ; Piston Ring Back Piston Kit 6F5-11636-00 0.50 Viewer:868 OEM No. : 6F5-11636-00-0.50 For YAMAHA Outboard 40 HP You May Also Be Interested In Piston Kit 64D-11635-00 0.25 Piston Kit 670-11631-01 STD Piston Kit 6H4-11631-01 STD Impeller 682-44352-00-00/682-44352-01-00