Shop by Brand Yamaha OutboardPiston/Piston Kit ; Piston Pin ; Piston Ring Back Piston Kit 670-11631-01 STD Viewer:923 OEM No. : 670-11631-01-STD For YAMAHA Outboard 50, 60, 75, 85 HP You May Also Be Interested In Piston Kit 61A-11635-00 0.25 Piston Kit 688-11631-03 STD Crankshaft 6R3-11411-00-00 Valve- Check 22-818994-1