Shop by Brand Yamaha OutboardPiston/Piston Kit ; Piston Pin ; Piston Ring Back Piston Kit 688-11635-02 0.25 Viewer:932 OEM No. : 688-11635-02-0.25 For YAMAHA Outboard 55 HP You May Also Be Interested In Piston Kit 6L1-11635-01 0.25 Piston Ring 6H4-11610-10-00 0.25 Gasket 6G5-11382-A1-00 Ball Bearing 30-16049/16049