Shop by Brand Yamaha OutboardPiston/Piston Kit ; Piston Pin ; Piston Ring Back Piston Kit 679-11636-00 0.50 Viewer:802 OEM No. : 679-11636-00-0.50 For YAMAHA Outboard 40 HP You May Also Be Interested In Piston Ring 676-11610-00 STD Piston Kit 664-11636-00 0.50 Water Pump Repair Kit 17400-87D11-000 Bearing 93310-84106-00