Shop by Brand Yamaha OutboardPiston/Piston Kit ; Piston Pin ; Piston Ring Back Piston Kit 61A-11642-01 STD Viewer:1534 OEM No. : 61A-11642-01-STD For YAMAHA Outboard 250 HP You May Also Be Interested In Piston Ring 688-11605-A0-00 0.50 Piston Kit 6L1-11631-01 STD Drive Shaft Assembly 670-45510-10-00/670-45510-11 Bush, Special Nylon 90386-18M63-00