Shop by Brand Yamaha OutboardPiston/Piston Kit ; Piston Pin ; Piston Ring Back Piston Kit 662-11631-01 STD Viewer:1168 OEM No. : 662-11631-01-STD For YAMAHA Outboard 9.9, 15 HP You May Also Be Interested In Piston Kit 6H3-11636-01 0.50 Piston Kit 6E7-11631-00-97 STD Power Head Gasket Kit 398047/0398047 Piston Pin 369-00021-0/369000210M