Shop by Brand Yamaha OutboardPiston/Piston Kit ; Piston Pin ; Piston Ring Back Piston Kit 676-11636-60 0.50 Viewer:913 OEM No. : 676-11636-60-0.50 For YAMAHA Outboard 40 HP You May Also Be Interested In Piston Ring 61X-11604-00-00 0.25 Piston Kit 664-11635-00 0.25 Gasket, Inlet Case 13121-96400-000 Gasket, Drain Plug 09168-10034-000