Dorman 624-628 Automatic Transmission Oil Cooler Hose Assembly - Inlet and Outlet

Transmission Oil Cooler Line for Wrangler

This Dorman automatic transmission oil cooler hose assembly restores the fluid path between the transmission and cooler on select Jeep Wrangler applications. Built as a direct replacement for OE-style service, Dorman 624-628 includes a thermostatic bypass valve to help regulate fluid flow and operating temperature.

Compatible with 2012-2018 Jeep Wrangler, inlet and outlet at transmission, and 2018 Jeep Wrangler JK, inlet and outlet with OE bypass valve.

Key Features

• Direct replacement automatic transmission oil cooler hose assembly
• Thermostatic bypass valve helps regulate transmission fluid temperature and flow
• Corrosion-resistant metal and rubber construction
• Quick disconnect ends on both sides for OE-style connection points
• Straight hose design with flexible routing
• Rated for 100 psi maximum working pressure
• Operating temperature range: -40 Deg. F to 329 Deg. F
• Natural hose color; no gasket or seal included

Detailed Description

Dorman 624-628 is an OE-style transmission oil cooler line assembly engineered for Jeep Wrangler models that use inlet and outlet connections at the transmission. The line matches original equipment technology by incorporating a thermostatic bypass valve, which helps manage fluid circulation as operating conditions change. Its metal and rubber construction is made for corrosion resistance and reliable sealing in demanding underhood environments. This part cross-references 55111450AB for the same application.

For buyers searching for a Jeep Wrangler transmission cooler line, Wrangler JK oil cooler line, or Dorman 624-628 transmission hose replacement, this assembly provides the correct quick-disconnect connection style and fitment-specific routing for the listed vehicles.

What It Helps Address

• Transmission fluid leaks at the cooler line connection
• Restricted or inconsistent fluid flow through the oil cooler circuit
• Heat-related transmission fluid circulation issues
• Corrosion damage to the original cooler line assembly
• Failed quick-disconnect fittings at the transmission end

Installation Notes and Tips

Install on the listed Jeep Wrangler applications only, using the inlet and outlet connection points at the transmission. Confirm the quick-disconnect fittings are fully seated and inspect the mating surfaces before installation. Because no gasket or seal is included, reuse or replacement of related sealing components should be verified during service. Always check line routing and clearance after installation to prevent contact with hot or moving components.

Quality Assurance

Dorman manufactures this replacement transmission oil cooler hose assembly to match OE-style technology and use corrosion-resistant materials for dependable service. Part number 624-628 is built for the specified Jeep Wrangler and Jeep Wrangler JK applications.