Glossary “plug” Definition:
1). A spark plug. 2). A threaded, tapered metal pin used to repair cracks in castings, such as an engine block. 3). To fill an opening or hole.
Glossary “plug” Definition:
1). A spark plug. 2). A threaded, tapered metal pin used to repair cracks in castings, such as an engine block. 3). To fill an opening or hole.