3500043 Diesel Immersion Heater $105.21 Quantity discounts available QuantityPrice Quantity -+ Add to Cart Details International/Navistar T444E (7.3L V-8) Engines Manufactured in 1994 & later 1000 watt, 120 volt, 3/4" NPT Replaces 3/4" threaded plug i... Details Back DetailsInternational/Navistar T444E (7.3L V-8) Engines Manufactured in 1994 & later 1000 watt, 120 volt, 3/4" NPT Replaces 3/4" threaded plug in oil cooler