Shop by Brand Yamaha OutboardPiston/Piston Kit ; Piston Pin ; Piston Ring Back Piston Ring 676-11610-10 0.25 Viewer:818 OEM No. : 676-11610-10-0.25 For YAMAHA Outboard 40 HP You May Also Be Interested In Piston Kit 6H1-11635-03 0.25 Piston Kit 688-11636-03 0.50 Mount Rubber, Lower Side 670-44555-00-94 Propeller 391199/0391199