3500044 Diesel Block Heater $78.12 Quantity discounts available QuantityPrice Quantity -+ Add to Cart Details International/Navistar 2004-2006 DT466 & DT570; 1994-2000 DT408, DT466, DT466E, 530, 570 1250 watt, 120 volt, 1-1/4" diameter Replaces 1... Details Back DetailsInternational/Navistar 2004-2006 DT466 & DT570; 1994-2000 DT408, DT466, DT466E, 530, 570 1250 watt, 120 volt, 1-1/4" diameter Replaces 1-1/4" freeze plug in boss on left side of engine