NEW BMI Cold Weather Service, Heavy Gauge Replacement Power Cord for up to 1500w Diesel Block Heaters. Compatible with Cummins 5.9 & 6.7L 1989-2024+ engines. Compatible with Dodge and Ram Factory Installed OEM Heaters. Cord for 120V AC This NEW BMI cord is made especially for the cold, with a high quality flexible rubber sheathing (not a cheap plastic covering that cracks in the cold) Plug ends are molded into cord, not just glued on to it like products of lesser quality; keeps moisture out! Watch out for the cheap cords with the "hex" nuts on the end.