A4039970920
Expansion Plug
Detroit Diesel

The expansion plug is a straightforward yet critical component that seals openings in engine components subjected to high temperatures and pressures. Its 36.20 mm length and 10 mm height ensure a proper fit in designated holes, preventing fluid leaks and contamination. Made from resilient materials designed to withstand thermal cycling, this plug maintains a tight seal over time, safeguarding engine internals from debris and moisture ingress. Proper installation of expansion plugs is essential for maintaining system integrity, especially in high-stress environments typical of heavy-duty engines. For dependable replacements, Source One Parts Center supplies these high-quality plugs, helping you preserve engine reliability and operational safety over the long haul.