Dorman 65399 Copper Oil Drain Plug Gasket Made to specific sizes and standards to ensure a proper fit Designed and constructed to strict engineering quality standards Size: 1/2 inch DO, 9/16 inch, M14, M14 SO OE part number: 007 603 014 106, 3C3Z-6734-AA, 4200173, 94000374, F6DZ 6734-AA