Route hot engine coolant to the heater core with the Dorman heater hose assembly, part number 626-558, a direct replacement designed to handle extreme temperature changes. It fits many vehicles, among them the 1997-2004 Ford F-150, 2004 Ford F-150 Heritage and 2003 Ford E-150. See the "Vehicles it fits" section for the full list and engine details.
Dorman engineered this HVAC heater hose assembly to match the fit and durability of the stock assembly, so it can take the place of the original hose on the listed applications.
- Ideal replacement: Directly replaces the factory heater hose on the listed vehicles.
- Durable construction: Designed to withstand extreme temperature changes and to resist cracking and leaking, which helps extend service life.
- Cost-effective and reliable: Offers original manufacturer quality at a lower cost than a dealer replacement.
- Industry-leading design: Professionally engineered by Dorman, the aftermarket leader in heater hose assemblies.
A worn heater hose may show coolant seepage or drips, visible cracks, a sweet coolant smell, a coolant level that keeps dropping, or weak cabin heat. These symptoms can have other causes, so diagnose the cooling and heating system before you replace parts. If a failed heater hose is the cause, this assembly replaces it.
Interchange: F75Z8555AB
Frequently Asked Questions
What does the Dorman heater hose do?
It carries engine coolant between the engine and the heater core so the heating system can warm the cabin. This assembly replaces the original heater hose on the listed applications.
Will this heater hose assembly fit my 1997-2004 Ford F-150?
Yes. It is listed for the 1997-2004 Ford F-150, the 2004 Ford F-150 Heritage and the 2003 Ford E-150. Check the "Vehicles it fits" section to confirm your exact vehicle.
What are signs a heater hose may need replacing?
Common signs include coolant leaks or seepage at the hose, cracks, a sweet coolant smell, a coolant level that keeps dropping, or weak cabin heat. Diagnose the cause before you replace the hose.
How is this hose assembly built to last?
Dorman designed it to withstand extreme temperature changes and to resist cracking and leaking, which helps extend its service life.
How is it installed?
It is designed as a direct replacement for the original heater hose. Follow the vehicle service information for draining, refilling and bleeding the cooling system.
