CORE PLUG. 30MM.

This 30 mm freeze plug is specifically designed for Citroën 11CV and HY models up to September 1963, as well as for the 15CV. The plug serves to protect the engine block from frost damage by allowing excess water to expand and preventing damage. It is an essential component for maintaining the engine's condition in classic Citroën vehicles. With a perfect fit, this freeze plug ensures a reliable seal, crucial for cold climates or during frost periods.