Shop by Brand Yamaha OutboardPiston/Piston Kit ; Piston Pin ; Piston Ring Back Piston Kit 676-11635-00 0.25 Viewer:991 OEM No. : 676-11635-00-0.25 For YAMAHA Outboard 40 HP You May Also Be Interested In Piston Ring 676-11610-10 0.25 Piston Ring 647-11610-10 0.25 Bearing 3C8-60213-0 Lever, Clamp 6B4-42815-00-4D