Dorman 918-294 Automatic Transmission Oil Cooler

Overview of Dorman 918-294 Automatic Transmission Oil Cooler

The Dorman 918-294 automatic transmission oil cooler is designed to provide reliable cooling performance for heavy-duty Chevrolet and GMC trucks. Engineered with durable aluminum construction, this cooler helps maintain optimal transmission temperatures for vehicles like the Silverado 2500 HD and Sierra 3500 HD.

• Core material made from lightweight, corrosion-resistant aluminum
• Dimensions: 20.5 inches length, 7 inches height, and 1.25 inches thickness
• 7-row core design for efficient heat dissipation
• Quick connect inlet and outlet attachment types with 0.375 inch diameter lines
• Standard replacement grade for dependable performance
• Black finish for corrosion resistance and durability
• Compatible with Chevrolet Silverado 2500 HD, Silverado 3500, Silverado 3500 HD, GMC Sierra 2500 HD, and Sierra 3500 HD

Detailed Product Description

The Dorman 918-294 automatic transmission oil cooler features a 7-row aluminum core that measures 20.5 inches in length, 7 inches in height, and 1.25 inches in thickness. Its core tube width is 0.767 inches, providing a robust surface area for effective heat exchange. The cooler’s inlet and outlet lines both have a 0.375 inch inside diameter and utilize quick connect fittings, simplifying installation and ensuring secure connections. Finished in black, the cooler resists corrosion and maintains structural integrity under demanding conditions. This part is a standard replacement designed specifically for heavy-duty Chevrolet and GMC trucks, including the Silverado 2500 HD and Sierra 3500 HD models, ensuring compatibility and reliable operation.

Common Applications and Issues Addressed

• Helps prevent transmission overheating during heavy towing or hauling
• Reduces risk of transmission fluid breakdown caused by excessive heat
• Improves transmission longevity by maintaining stable operating temperatures
• Addresses leaks or damage in original transmission oil coolers
• Restores proper transmission fluid cooling in older or worn vehicles

Installation Notes and Tips

• Designed for quick connect fittings; ensure connectors are clean and free of debris before installation
• Installation hardware is not included; verify existing mounting points and hardware compatibility
• Inspect transmission fluid lines for wear or damage during installation
• Follow vehicle manufacturer torque specifications for mounting bolts
• Check for leaks after installation and during initial operation

Quality Assurance and Warranty

Dorman 918-294 is manufactured to meet standard replacement quality requirements, using durable aluminum materials and tested for reliable performance. While installation hardware is not included, the part is engineered to OEM specifications for Chevrolet and GMC heavy-duty trucks. Warranty coverage details should be confirmed with the parts provider or vehicle manufacturer.