Fisher Plug

Fisher Plug also known as Welch Plug, is a metallic plug used to seal the holes in an engine block or cylinder head. These plugs can be used during the manufacturing process of engine blocks to seal the openings left from the casting process. These plugs seal the holes left during the casting of the engine block. They prevent coolant, oil, or debris from leaking out of the engine. Also, it is made from high-quality material and can be used in a tough situation.