Description
Product Overview
The Dorman 626-516 Heater Hose Assembly is engineered to match the exact specifications of the original equipment manufacturer (OEM) part, providing a seamless fit for a wide range of automotive heating, ventilation, and air‑conditioning (HVAC) systems. Crafted from high‑grade synthetic rubber, the hose offers superior resistance to oil, coolant, and ozone, which helps prevent premature degradation. The flared NPT (National Pipe Thread) connector ensures a tight, leak‑free seal, while the machined exterior finish adds durability and a professional appearance. With dimensions of 6.3 x 11.2 x 43.3 inches and a weight of just 1.84 pounds, this large‑size assembly is designed for easy installation and long‑term reliability. The part carries the Dorman model number 626-516 and OEM reference 55038331AG, guaranteeing compatibility with the vehicle’s existing mounting points and routing paths.
![[Product front view showing all components]](https://www.unicorngo.store/wp-content/uploads/2026/06/45e921ccc6664effb198f57f81a7c946.jpg)
Usage
This heater hose assembly is ideal for use in passenger cars, light trucks, and SUVs that rely on a hot‑water heater core to provide cabin warmth. It performs optimally in environments where temperature fluctuations are extreme, such as cold winter mornings and hot summer afternoons. The synthetic rubber construction tolerates both high heat from the engine and low temperatures from the ambient air without cracking or becoming brittle. Install the assembly during routine HVAC service, after a coolant flush, or whenever the original hose shows signs of wear, swelling, or leakage. The flared NPT connector simplifies the connection to the heater core and radiator, reducing installation time and the risk of cross‑threading. This part is also suitable for aftermarket upgrades where a more robust hose is desired to extend the service interval.
Why Choose Us
Dorman is a trusted name in automotive aftermarket parts, known for rigorous testing and quality assurance. Each heater hose assembly undergoes a multi‑stage validation process that includes pressure testing, temperature cycling, and material analysis to ensure it meets or exceeds OEM standards. By choosing this Dorman assembly, you benefit from the brand’s extensive distribution network, which provides fast shipping and easy access to replacement parts. The product also includes a limited warranty that covers defects in material or workmanship, giving you confidence in the long‑term performance of the hose. Compared with dealer‑priced alternatives, Dorman offers a cost‑effective solution without compromising on durability or fit. Additionally, the assembly is backed by a knowledgeable customer support team ready to assist with fitment questions, installation guidance, and warranty claims.
Key Features
- Durable synthetic rubber resists cracking, swelling, and oil exposure for extended service life.
- Flared NPT connector provides a secure, leak‑free seal that simplifies installation.
- Machined exterior finish adds strength and a professional look, reducing wear from rubbing against brackets.
- Large size (6.3 x 11.2 x 43.3 inches) fits a broad range of vehicle models and HVAC configurations.
- Backed by Dorman’s warranty and dedicated support team for peace of mind after purchase.
FAQ
What vehicles are compatible with the 626-516 heater hose assembly?
The assembly fits many makes and models that use a standard flared NPT heater hose. Compatibility is determined by the vehicle’s year, make, model, and engine type. Use Dorman’s online fitment tool or consult the part number list to confirm exact matches.
Can I install this hose myself, or do I need a professional?
Installation is straightforward for anyone with basic automotive tools. The flared NPT connector is designed for hand‑tightening, and the hose can be routed using existing clamps. However, if you are unfamiliar with HVAC systems, a professional mechanic can ensure proper sealing and avoid potential coolant leaks.
How does synthetic rubber compare to traditional rubber hoses?
Synthetic rubber offers better resistance to heat, oil, and ozone, which translates to a longer service interval. It also maintains flexibility in cold temperatures, reducing the chance of cracks that can lead to leaks.
What warranty does Dorman provide for this part?
Dorman offers a limited warranty that covers defects in material or workmanship for a specified period after purchase. Details are included with the product packaging and can be verified on Dorman’s website.
Is this part covered by my vehicle’s insurance or warranty?
Because the heater hose assembly is an aftermarket part, it is generally not covered by the original vehicle warranty. However, many insurance policies will cover the cost of replacement if the failure is due to a covered event such as accidental damage.





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