CORE PLUG. 30MM.

This 30 mm core plug closes coolant passages in engine blocks of Citroën vehicles. The plug prevents coolant leakage and supports stable engine temperature. It is used in engines of older Citroën models, including specific versions of 11CV, HY and 15CV produced until the early sixties. The part is suitable as a replacement during overhaul or regular cooling system service. The material is compatible with common engine coolants. Installation requires a matching recess in the engine block and accurate seating of the plug. Correct fit and seating are important for maintaining a sealed and reliable coolant circuit.