Shop by Brand Yamaha OutboardPiston/Piston Kit ; Piston Pin ; Piston Ring Back Piston Kit 646-11631-01 STD Viewer:1291 OEM No. : 646-11631-01-STD For YAMAHA Outboard 2 HP You May Also Be Interested In Piston Ring 682-11610-20-00/682-11610-21-00 0.50 Piston Kit 688-11631-81 STD Water Pump Repair Kit 17400-93911-000 Fuel Connector 173311/0173311