Genuine OEM Jaguar Engine Block Heater, part number C2D12245. This device is designed to pre-warm the engine block in cold weather conditions, which aids in easier engine starting and reduces wear on internal components. It typically installs directly into a coolant passage in the engine block. Weighing approximately 0.224 kg, using a genuine OEM block heater ensures the correct heating element, sealing, and electrical connection, providing safe and efficient engine pre-heating without risk of leaks or electrical issues.