Transmission Cooler Hose Assembly for GM Trucks

Dorman 724-132 is an automatic transmission oil cooler hose assembly for select Chevrolet Silverado and GMC Sierra truck applications. It replaces the factory crimped connection with a threaded connection for easier service and a more secure seal at the bypass valve area.

Built with molded hose construction, steel and aluminum components, and integrated fittings, this assembly supports proper transmission fluid flow in inlet and outlet routing. It is a direct-fit service part for vehicles that need a replacement for rusted, fatigued, or leaking cooler lines.

Key Features

• OE FIX design replaces the factory crimped connection with a threaded connection
• Automatic transmission oil cooler hose assembly for inlet and outlet routing
• Molded assembly with black and silver finish
• Flexible rubber hose with steel and aluminum components
• Includes gasket or seal for service installation
• Maximum working pressure: 250
• Operating temperature range: -40F to 329F
• Part number: 724-132

Detailed Description

Dorman 724-132 is engineered for GM truck cooling-system service where the original line assembly uses crimped joints that can become difficult to repair individually. By changing the connection style at the bypass valve to a threaded design, this transmission cooler hose assembly simplifies replacement and helps maintain a tight, leak-resistant seal for consistent fluid transfer. It is a practical solution for Chevrolet Silverado and GMC Sierra owners dealing with transmission cooler line wear, corrosion, or seepage. This part number, 724-132, is also referenced for related service applications under OE interchange 20835128.

Vehicle Fitment

• Fits 2009-2013 Cadillac Escalade, inlet and outlet.
• Fits 2008-2013 Chevrolet Tahoe, inlet and outlet.
• Fits 2008-2013 GMC Yukon, inlet and outlet.

Common Issues This Part Can Solve

• Transmission fluid leaks at the cooler line connection
• Corrosion or fatigue in the original oil cooler hose assembly
• Service difficulty caused by crimped factory connections
• Reduced fluid flow from a damaged inlet or outlet line
• Need for a replacement after bypass valve connection failure

Installation Notes and Tips

Verify the vehicles inlet and outlet routing before installation and compare the original line layout to the replacement assembly. Inspect mating surfaces, seals, and connection points for corrosion or debris so the threaded connection can seat properly and maintain a secure seal.

Quality Assurance

Dorman OE FIX parts are built to address known factory service issues with a more serviceable replacement design. This assembly is intended to restore proper transmission cooler line function on the listed Cadillac Escalade, Chevrolet Tahoe, and GMC Yukon applications.