Features: 1. Working Principle: The preheater uses a 220V power supply to circulate and heat the antifreeze through the built-in pump and electric heating element, increasing engine temperature. 2. Multifunction: Improves interior temperature, preheats engine coolant, and helps prevent engine wear in cold conditions. Assists in vehicle interior thawing, easier starting, and windshield defrosting. 3. Fast Preheating: 1500W heater with built-in thermostat; heats within 30 minutes. Operates effectively even in temperatures as low as -30°C. 4. Wide Application: Suitable for cars, trucks, buses, campers, caravans, engineering vehicles, and ships with engine displacement under 1.5L. 5. Durable Construction: Metal housing ensures long service life of at least 2000 hours. Easy to install, saving time and effort. Specification: Item Type: Car Preheater Material: Metal Power: 1500W Working Voltage: 220V-250V Connector Diameter: Approx. 18mm / 0.71in Automatic Temperature Control: 65-70°C Pump Lift: Approx. 90cm / 35.4in or more Plug Type: EU Plug, 220V-250V Fitment: Compatible with various vehicles with engine displacement up to 1.5L Note: 1. After installation, ensure proper bleeding of the antifreeze system to remove air, preventing flow blockage and potential damage to the preheater. 2. This preheater is not compatible with natural heaters. It is designed only for vehicles using glycol-based antifreeze. Low-quality antifreeze may cause scaling, rust, or ice buildup, leading to clogging. 3. Use a 220-250V, 10A power socket capable of handling a peak current of 16A with a grounded three-wire connection. Ensure reliable grounding protection. 4. Please note that new or old version of this product may be shipped randomly. Confirm acceptance of this condition before purchasing.