Copper Drain Plug Gasket, Fits ? D.O., 9/16, M14 S.O. (25 Copper Gaskets). Dorman's Engine Oil Drain Plug Gaskets are conveniently available in packs of varying quantities. Many styles are offered, including Copper, Aluminum, Nylon, Metal/Rubber, Inset, Fiber and Crush gaskets. Replacement is recommended at every oil change. Oil filter caps are available separately.
