Shop by Brand Yamaha OutboardPiston/Piston Kit ; Piston Pin ; Piston Ring Back Piston Kit 682-11631-00 STD Viewer:926 OEM No. : 682-11631-00-STD For YAMAHA Outboard 9.9, 15 HP You May Also Be Interested In Piston Kit 696-11631-00 STD Piston Kit 69L-11646-00 0.50 Piston Ring 675-11610-20 0.50 Propeller Hardware Kit 3V9-87326-0/3V9873260M