Dorman 624-723 Automatic Transmission Oil Cooler Hose Assembly - Inlet and Outlet

Automatic Transmission Oil Cooler Hose Assembly

Dorman 624-723 is an automatic transmission oil cooler hose assembly built to match the fit and function of the original line on select Chevrolet Express and GMC Savana vans. It is a direct replacement for leaking or damaged transmission cooler hoses, with durable steel construction and pre-attached fittings for a cleaner service replacement.

Key Features

• Direct replacement automatic transmission oil cooler hose assembly
• Fits inlet and outlet applications on select vans
• Steel hose construction with black housing finish
• Crimp-style end connections with fittings included
• Flexible design for routing in the transmission cooling circuit
• Rated for 500 maximum working pressure
• Operating temperature range: -40°F to 329°F

Product Details

This Dorman transmission cooler hose assembly is engineered for select 2009-2016 Chevrolet Express 2500, 2009-2016 Chevrolet Express 3500, 2009-2016 GMC Savana 2500, and 2009-2016 GMC Savana 3500 applications. Dorman 624-723 is built to replace the original hose assembly where the transmission cooler line connects at the inlet and outlet, helping restore proper fluid routing in the cooling system. The assembly includes fittings and a gasket or seal, and its straight hose shape supports OE-style routing on the specified vehicles. This part cross-references 20916868 for the same application.

Common Problems This Part Can Address

• Transmission fluid leaks from a damaged cooler hose assembly
• Cracked, corroded, or worn cooler line sections
• Restricted fluid flow through a compromised hose
• Improper sealing at the inlet or outlet connection
• Service replacement needs on Chevrolet Express and GMC Savana vans

Installation Notes and Tips

Verify vehicle year, make, model, and inlet/outlet routing before installation. Inspect the mating surfaces and surrounding cooler line connections for wear, corrosion, or residue before attaching the new assembly. Confirm the hose is routed without kinks or contact points that could affect transmission fluid flow. For best results, compare the original line to Dorman 624-723 before final installation on Chevrolet Express 2500, Chevrolet Express 3500, GMC Savana 2500, or GMC Savana 3500 applications.

Quality Assurance

Dorman designs this hose assembly as a replacement for the original transmission cooler line on the listed vehicles, using durable components to match fit and function. The part number is 624-723.