CSF 20008 Automatic Transmission Oil Cooler

CSF 20008 Automatic Transmission Oil Cooler

The CSF 20008 automatic transmission oil cooler is a parallel-flow unit built for direct dealer-installed applications on select Chevrolet Silverado 2500 HD, GMC Sierra 2500 HD, Cadillac Escalade EXT, and Chevrolet Avalanche 2500 models. Its compact core dimensions and quick-fitting inlet and outlet tubes support clean integration into the factory cooling layout.

Key Features

• Parallel-flow construction for efficient transmission fluid cooling
• Core thickness: 1 in.
• Core width: 4 3/4 in.
• Core length: 9 3/4 in.
• Quick-fitting inlet tube for streamlined connection
• Quick-fitting outlet tube for streamlined connection
• CSF part number 20008 for application matching and catalog lookup

Product Details

Built as an automatic transmission oil cooler, the CSF 20008 helps manage transmission fluid temperature in heavy-duty truck and SUV applications where heat control matters. The parallel-flow design promotes fluid-to-air heat transfer through a compact core, while the quick fitting inlet and outlet tubes support factory-style routing. This part number 20008 is listed for dealer-installed use on 1999-2000 Chevrolet Silverado 2500 and GMC Sierra 2500, 2001-2006 Chevrolet Silverado 2500 HD and GMC Sierra 2500 HD, 2002-2006 Cadillac Escalade EXT and Chevrolet Avalanche 2500, and 2007 Chevrolet Silverado 2500 HD Classic and GMC Sierra 2500 HD Classic. This part cross-references GM 12497072 and GM4050103 for the same application.

What It Helps Address

• High transmission fluid temperatures during towing or hauling
• Heat buildup in stop-and-go driving
• Reduced cooling performance from a worn or damaged cooler
• Transmission fluid temperature control in heavy-duty use
• Replacement needs for dealer-installed cooling system service

Installation Notes and Tips

Verify the vehicle’s dealer-installed cooler configuration before ordering. Confirm inlet and outlet tube style, mounting space, and core dimensions against the original unit. For best results, inspect transmission lines and surrounding cooling components for wear, leaks, or contamination before installation. Fitment includes 1999-2000 Chevrolet Silverado 2500 and GMC Sierra 2500, 2001-2006 Chevrolet Silverado 2500 HD and GMC Sierra 2500 HD, 2002-2006 Cadillac Escalade EXT and Chevrolet Avalanche 2500, and 2007 Chevrolet Silverado 2500 HD Classic and GMC Sierra 2500 HD Classic.

Quality Assurance

CSF is an established cooling-system brand with a focus on radiator and heat-exchange components. The CSF 20008 is built to match the listed application requirements and OE cross-reference numbers for accurate replacement selection.