8131937
Engine Expansion Plug Insert
Mack

The engine expansion plug insert is a critical sealing component used to close off openings in the engine block, preventing coolant or oil leaks. Its precise fit and corrosion-resistant materials ensure a tight seal under high temperature and pressure conditions typical of heavy-duty engines. Proper installation of this insert helps maintain engine integrity, avoiding costly repairs and downtime. It also plays a role in preserving optimal engine performance by preventing fluid loss and contamination. Regular checks and replacement of worn or damaged inserts are vital for engine longevity. Source One Parts Center offers this essential part, supporting reliable engine operation for commercial trucking applications.