Help keep heat flowing to the cab with the Dorman heater hose assembly, part number 626-617, an outlet-position replacement designed to withstand extreme temperature changes. It fits many vehicles, among them the 1999-2013 Chevrolet Silverado 1500, the 1999-2013 GMC Sierra 1500 and the 2007 Chevrolet Silverado 1500 Classic. See the "Vehicles it fits" section for the full list and engine details.
A heater hose carries hot engine coolant between the engine and the heater core that warms your cabin. This Dorman heater hose is engineered to match the fit and durability of the stock assembly on the listed applications, and it directly replaces the original heater hose in the outlet position.
- Ideal replacement: This Dorman HVAC heater hose assembly takes the place of the original heater hose on the listed applications.
- Durable construction: It is designed to withstand extreme temperature changes and to resist cracking and leaking, with the aim of a longer service life.
- Cost-effective and reliable: It offers original-manufacturer quality at a lower cost than a dealer replacement.
- Industry-leading design: It is professionally engineered by the aftermarket leader in heater hose assemblies.
Signs that a heater hose may need replacing include coolant drips or wetness near the hose, a dropping coolant level, a sweet smell from the engine bay, or weak cabin heat. If a failed outlet heater hose is the cause, this assembly replaces it.
Interchange: 15111062 · 22884218
Frequently Asked Questions
What does the 626-617 heater hose assembly do?
It carries hot engine coolant between the engine and the heater core at the outlet position. The heater core uses that heat to warm the cabin.
Does it fit a 1999-2013 Chevrolet Silverado 1500?
It is listed for the 1999-2013 Chevrolet Silverado 1500 and the 2007 Chevrolet Silverado 1500 Classic. Check the "Vehicles it fits" section to confirm your exact vehicle and engine.
Will it fit a 1999-2013 GMC Sierra 1500?
It is listed for the 1999-2013 GMC Sierra 1500. The "Vehicles it fits" section shows every listed application and its engine details.
What are signs a heater hose may need replacing?
Coolant leaks or wetness at the hose, a falling coolant level, a sweet coolant smell, or reduced heater output can be signs of a worn hose. Diagnose the cause before you replace any parts.
What should I know about installing it?
Follow the vehicle service information for draining and refilling the coolant and for securing the hose connections. After the engine warms up, recheck the coolant level and inspect for leaks.
