Shop by Brand Yamaha OutboardPiston/Piston Kit ; Piston Pin ; Piston Ring Back Piston Kit 61A-11631-02 STD Viewer:1515 OEM No. : 61A-11631-02-STD For YAMAHA Outboard 250 HP You May Also Be Interested In Piston Kit 64D-11631-00 STD Piston Kit 688-11636-02 0.50 Bush, Special Nylon 90386-18M63-00 Inner Plate, Cartridge 670-44321-00-00