This engine block drain plug closes a drain opening in the cooling system of various Citroën engines. The plug allows coolant to be drained during maintenance or repair. The threaded section provides a secure fit in the engine block. The sealing design limits leakage during operation. The dimensions suit engine blocks that use an M12 thread and matching seat. The material tolerates contact with coolant and typical engine temperatures. The part supports regular servicing of the cooling system and helps to empty the system without additional disassembly. It forms part of the cooling circuit and contributes to reliable fluid management.
