Shop by Brand Yamaha OutboardPiston/Piston Kit ; Piston Pin ; Piston Ring Back Piston Kit 688-11635-02 0.25 Viewer:933 OEM No. : 688-11635-02-0.25 For YAMAHA Outboard 55 HP You May Also Be Interested In Piston Kit 696-11631-00 STD Piston Kit 6G5-11635-00 0.25 Gear 57521-94402 Switch Assy 87-17009A5/17009A5