Shop by Brand Yamaha OutboardPiston/Piston Kit ; Piston Pin ; Piston Ring Back Piston Kit 688-11635-02 0.25 Viewer:914 OEM No. : 688-11635-02-0.25 For YAMAHA Outboard 55 HP You May Also Be Interested In Piston Kit 689-11631-00 STD Piston Ring 66T-11603-00 STD Gasket 27-43006-8/43006 8 Fuel Filter 6CB-24501-01-00