Shop by Brand Yamaha OutboardPiston/Piston Kit ; Piston Pin ; Piston Ring Back Piston Kit 682-11631-00 STD Viewer:933 OEM No. : 682-11631-00-STD For YAMAHA Outboard 9.9, 15 HP You May Also Be Interested In Piston Ring 6R5-11605-00-00 0.50 Piston Kit 664-11635-00 0.25 Bolt 90101-12M37-00 Propeller 362-64108-0 / 362641080M / 362B641080 / 362W641080