Shop by Brand Yamaha OutboardPiston/Piston Kit ; Piston Pin ; Piston Ring Back Piston Kit 682-11635-00 0.25 Viewer:813 OEM No. : 682-11635-00-0.25 For YAMAHA Outboard 9.9, 15 HP You May Also Be Interested In Piston Kit 6F5-11636-00 0.50 Piston Kit 6H4-11631-01 STD Ball Bearing 30-88957T/88957T Oil Seal 09283-35043-000