Shop by Brand Yamaha OutboardPiston/Piston Kit ; Piston Pin ; Piston Ring Back Piston Kit 66T-11636-00 0.50 Viewer:947 OEM No. : 66T-11636-00-0.50 For YAMAHA Outboard 40 HP E40 40X You May Also Be Interested In Piston Kit 682-11636-00 0.50 Piston Kit 6L1-11631-01 STD Carburetor Assembly 13200-964J0-000 Steering Cable 24F