Shop by Brand Yamaha OutboardPiston/Piston Kit ; Piston Pin ; Piston Ring Back Piston Kit 689-11631-60 STD Viewer:994 OEM No. : 689-11631-60-STD For YAMAHA Outboard 25, 30 HP You May Also Be Interested In Piston Kit 61N-11631-00 STD Piston Kit 676-11631-00 STD Gasket, Cylinder Head 345-01005-0/345010050M Piston Ring 12140-97J00-050 0.50