Keep hot engine coolant flowing through the cabin heating circuit with the Dorman heater hose assembly, part number 626-615, an outlet-position replacement hose designed to withstand extreme temperature changes and resist cracking and leaking. It fits many Chevrolet and GMC pickups, among them the 2006-2010 Chevrolet Silverado 2500 HD, 2007-2010 Chevrolet Silverado 3500 HD and 2006-2010 GMC Sierra 2500 HD. See the "Vehicles it fits" section for the full list and engine details.
Engineered to fit and hold up like the stock assembly it replaces, this Dorman HVAC heater hose assembly is designed to withstand extreme temperature changes, which helps extend its service life.
- Ideal replacement: directly replaces the original heater hose on the listed applications.
- Durable construction: designed to resist cracking and leaking.
- 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.
Signs this part may need replacing include coolant drips or puddles, cracks or swelling on the hose, a coolant level that keeps dropping, or reduced heat from the vents. If a leaking or cracked outlet heater hose is the cause, this assembly replaces it.
Interchange: 15119414 · 25800640
Frequently Asked Questions
What does a Dorman heater hose do?
It carries engine coolant between the engine and the heater core so the HVAC system can warm the cabin. This assembly, 626-615, is cataloged for the outlet position.
Will it fit my 2006-2010 Chevrolet Silverado 2500 HD?
Yes. It is listed for the 2006-2010 Chevrolet Silverado 2500 HD and the 2006-2010 GMC Sierra 2500 HD. The "Vehicles it fits" section shows every listed truck.
What signs mean the heater hose may need replacing?
Common signs include coolant drips or puddles, cracks or swelling on the hose, a coolant level that keeps dropping, or reduced cabin heat. Diagnose the cause before replacing parts.
Is it built to handle engine heat?
Yes. Dorman designed it to withstand extreme temperature changes and to resist cracking and leaking.
How is it installed?
It installs in place of the original heater hose. Drain the coolant, follow the vehicle service information for removal and installation, then refill and bleed the cooling system.
