Shop by Brand Yamaha OutboardPiston/Piston Kit ; Piston Pin ; Piston Ring Back Piston Kit 676-11631-00 STD Viewer:981 OEM No. : 676-11631-00-STD For YAMAHA Outboard 40 HP You May Also Be Interested In Piston Kit 676-11631-60 STD Piston Kit 688-11636-03 0.50 Housing, Bearing 63V-45331-00-5B/63V-45331-00-CA Starter Motor 68T-81800-00-00