Shop by Brand Yamaha OutboardPiston/Piston Kit ; Piston Pin ; Piston Ring Back Piston Kit 6G0-11631-00 STD Viewer:892 OEM No. : 6G0-11631-00-STD For YAMAHA Outboard 20, 25 HP You May Also Be Interested In Piston Ring 688-11603-A0-00 STD Piston Kit 689-11631-00 STD Gasket, Float Chamber 13251-98100-000 Spring 66T-15767-00-00