Shop by Brand Yamaha OutboardPiston/Piston Kit ; Piston Pin ; Piston Ring Back Piston Kit 662-11631-01 STD Viewer:1187 OEM No. : 662-11631-01-STD For YAMAHA Outboard 9.9, 15 HP You May Also Be Interested In Piston Kit 61A-11642-01 STD Piston Kit 6G5-11645-00 0.25 Water Pump Repair Kit 17400-91820-000 Gasket, Drive Shaft Housing 309-61012-1/309610121M