Dorman 724-520 Automatic Transmission Oil Cooler Hose Assembly - Lower

Overview

Dorman 724-520 is an automatic transmission oil cooler hose assembly engineered for specified GM applications. It uses a two-piece layout with rigid lines, a crimped rubber hose, and a dual-sided union connector to simplify replacement and help maintain a leak-resistant connection.

Compatible with Chevrolet Silverado 1500, GMC Sierra 1500, and other listed GM models, this assembly is built to match the original equipment function on the vehicles shown below. The Dorman 724-520 design is packaged in a compact format that reduces the routing hassle often associated with a single full-length line.

Key Features

• Two-piece transmission oil cooler hose assembly for specified GM vehicles
• Rigid line and rubber hose construction for a service-style replacement
• Dual-sided union connector for a secure, leak-resistant joint
• Male quick-connect ends for direct connection at the specified interfaces
• Operating range from -40°F to 329°F for transmission cooling service
• Black molded assembly with steel and rubber construction

Detailed Description

This automatic transmission oil cooler hose assembly is designed for lower-position applications on 2007-2013 Chevrolet Silverado 1500, 2007-2013 GMC Sierra 1500, 2007-2009 Chevrolet Suburban 1500, 2007-2009 Chevrolet Tahoe, 2007-2009 GMC Sierra, 2007-2009 GMC Yukon, 2007-2008 Chevrolet Avalanche, and 2007-2008 GMC Yukon XL 1500. The molded assembly uses male quick-connect ends at both sides, a 24-inch overall length, and a 0.296-inch inside diameter at each end.

Dorman 724-520 is part of the OE FIX line, which focuses on replacement solutions that address common service challenges with revised designs. In this case, the two-piece construction and included union fitting reduce the need to route a full-length line under the vehicle. This part cross-references GM 15779541 and 22802047 for the same application.

Common Problems It Can Address

• Transmission oil cooler hose leakage
• Cracked or damaged cooler line sections
• Service delays caused by difficult line routing
• Failed quick-connect interfaces at the hose ends
• Loss of transmission fluid through a compromised cooler line assembly

Installation Notes

Verify the vehicle application, position, and connector style before installation. This assembly uses male quick-connect ends and a union connector, so the existing line routing and attachment points should be checked against the original configuration. Confirm that the lower-position fitment matches the vehicle before replacing the hose assembly.

Quality Assurance

Dorman manufactures this OE FIX hose assembly to match original equipment performance on the specified vehicles and to provide a service-oriented replacement design for long-term use.