Shop by Brand Yamaha OutboardPiston/Piston Kit ; Piston Pin ; Piston Ring Back Piston Kit 682-11631-00 STD Viewer:955 OEM No. : 682-11631-00-STD For YAMAHA Outboard 9.9, 15 HP You May Also Be Interested In Piston Kit 6L1-11631-11 STD Piston Kit 688-11636-03 0.50 Face Plate 817276-1 Oil Seal, Propeller Shaft 26-16130/16130