Shop by Brand Yamaha OutboardPiston/Piston Kit ; Piston Pin ; Piston Ring Back Piston Kit 688-11635-02 0.25 Viewer:908 OEM No. : 688-11635-02-0.25 For YAMAHA Outboard 55 HP You May Also Be Interested In Piston Kit 64D-11631-00 STD Piston Ring 6E5-11610-00-00 STD Drive Shaft-L 45-881938/881938 Bearing 93315-425U7-00