KatsHeaters 11431 400 Watt 44.5mm Frost Plug Engine Heater

The Kat's 11431 is a 400-watt frost plug engine heater designed to warm your vehicle's engine block during cold weather, ensuring reliable starts and protecting against cold-start damage. This direct-immersion heater installs in place of a 44.5mm (1-3/4 inch) frost plug, positioning the heating element directly in the engine coolant for efficient heat transfer.

Key Features:

• 400-watt heating element provides consistent engine warming
• Fits 44.5mm (1-3/4 inch) frost plug openings
• Direct coolant immersion for faster, more efficient heating
• Reduces engine wear by ensuring proper oil flow at startup
• Improves fuel economy and reduces emissions during warm-up
• Shortens engine warm-up time for immediate cabin heat
• Durable construction for reliable cold-weather performance

Frost plug heaters are one of the most effective engine heating solutions, warming the coolant and engine block from the inside out. By maintaining warmer engine temperatures overnight, this heater eliminates the strain of cold starts, extends engine life, and provides better fuel vaporization for cleaner emissions. Simply plug in the heater 2-4 hours before starting your vehicle for optimal results.