Shop by Brand Yamaha OutboardPiston/Piston Kit ; Piston Pin ; Piston Ring Back Piston Kit 61A-11631-02 STD Viewer:1486 OEM No. : 61A-11631-02-STD For YAMAHA Outboard 250 HP You May Also Be Interested In Piston Kit 6F6-11636-00 0.05 Piston Pin 6E5-11633-00 Power Head Gasket Set 3B7-87121-1/3B7-871217M Crank 6F5-11432-00