Shop by Brand Yamaha OutboardPiston/Piston Kit ; Piston Pin ; Piston Ring Back Piston Kit 6F6-11635-00 0.25 Viewer:858 OEM No. : 6F6-11635-00-0.25 For YAMAHA Outboard 40 HP You May Also Be Interested In Piston Pin 6G5-11633-00 Piston Ring 61U-11601-10-00 0.25 Gasket, Exhaust Tube 14213-93900-000/14213-93910-000 Gasket, Exhaust Manifold 67F-41134-A0-00