Calix UI466 Engine Block Coolant Pre-Heater 750W, 115V - 1816610Calix UI466 Engine Block Coolant Pre Heater 750W 115V Introducing a must have engine block pre heater for engines used in race conditions and applications. This compact, lightweight block pre heater is a direct fit to the rear of the engine and when connected to a mains power source, it heats the engine coolant up to premium operating temperature without the engine running. Reduce unnecessary wear on expensive engine components, which in a highly