Shop by Brand Yamaha OutboardPiston/Piston Kit ; Piston Pin ; Piston Ring Back Piston Kit 66T-11636-00 0.50 Viewer:964 OEM No. : 66T-11636-00-0.50 For YAMAHA Outboard 40 HP E40 40X You May Also Be Interested In Piston Pin 6E7-11633-00 Piston Ring 6J1-11610-00-00 STD Bolt 97095-08045-00 Piston Kit 6F6-11636-00 0.05