Vacuum Closes Non-Bypass Heater Valve. Heater Valve. Type: Heater Valves. 2003 Ford F-250 5/8 In. x 5/8 In.;. 2004 Ford F-250 5/8 In. Ensure that this part fits your vehicle by entering your vehicle's Year, Make, Model, Trim, and Engine in the Compatibility Table.
