Shop by Brand Yamaha OutboardPiston/Piston Kit ; Piston Pin ; Piston Ring Back Piston Kit 682-11635-00 0.25 Viewer:811 OEM No. : 682-11635-00-0.25 For YAMAHA Outboard 9.9, 15 HP You May Also Be Interested In Piston Kit 6R5-11646-01 0.50 Piston Kit 61A-11636-00/61A-11636-01 0.50 Oil Seal, SD-Type 93102-28M08-00 Oil Seal, SO-Type 93104-20M02-00