Shop by Brand Yamaha OutboardPiston/Piston Kit ; Piston Pin ; Piston Ring Back Piston Kit 679-11636-00 0.50 Viewer:800 OEM No. : 679-11636-00-0.50 For YAMAHA Outboard 40 HP You May Also Be Interested In Piston Kit 6G5-11636-00 0.50 Piston Kit 69L-11642-00 STD Nut, Hexagon 90170-12138-00 Liner, Pump Case 3C8-65011-1/3C8650111M