Zerostart Engine Block Heater Compatible with: Ford Triton 4.6 5.4 & 6.8 L F150 F250 600w E150 E250 Compatible with: All Ford Triton 4.6 5.4 (V-8) & 6.8 (V-10) Liter Gas Engines 1996-2010 Made in the USA! Fast Heating! New Cord Included Easy Installation