3500081 Heavy-Duty Coolant Heater $122.85 Quantity discounts available QuantityPrice Quantity -+ Add to Cart Details 1500 Watts120 Volts44mm DiameterReplaces Core Plug on Center of Right SideHeater Kit Includes Special High Temperature CordsetFor ... Details Back Details1500 Watts120 Volts44mm DiameterReplaces Core Plug on Center of Right SideHeater Kit Includes Special High Temperature CordsetFor Engines: C7 (4.4L) 3114 (4.4L) 3116 (6.6L) 3126 (7.2L) 3126B (7.2L) CFE (Caterpillar/Freightliner Engine)