Shop by Brand Yamaha OutboardPiston/Piston Kit ; Piston Pin ; Piston Ring Back Piston Kit 6F6-11631-00 STD Viewer:846 OEM No. : 6F6-11631-00-STD For YAMAHA Outboard 40 HP You May Also Be Interested In Piston Kit 689-11631-00 STD Piston Kit 6R5-11646-01 0.50 Fitting 22-63186/63186 Carburetor Repair Kit 66T-W0093-00-00/66T-W0093-01-00