Shop by Brand Yamaha OutboardPiston/Piston Kit ; Piston Pin ; Piston Ring Back Piston Kit 682-11631-00 STD Viewer:927 OEM No. : 682-11631-00-STD For YAMAHA Outboard 9.9, 15 HP You May Also Be Interested In Piston Kit 6R5-11642-11 STD Piston Kit 6F6-11635-00 0.25 Gasket, Manifold 6E5-13645-A1-00 Gasket, Cylinder Head 11141-97JL0-000