Dorman 918-293 Automatic Transmission Oil Cooler - Auxiliary

Reliable Automatic Transmission Oil Cooler for Chevrolet and GMC Trucks

The Dorman 918-293 automatic transmission oil cooler is designed to maintain optimal transmission temperatures for heavy-duty Chevrolet and GMC trucks. Engineered with durable aluminum construction, this cooler supports efficient heat dissipation to help protect your vehicle's transmission system.

• Core material made of aluminum for effective heat transfer
• Dimensions: 22.8 inches length, 8.34 inches height, 4.06 inches width, and 1.91 inches depth
• Core features 8 rows with a 1.05-inch core tube width
• Inlet and outlet diameters both measure 1.05 inches with O-ring compression and quick connect attachment types
• Finished in black for corrosion resistance
• Standard replacement grade for reliable performance
• Package includes one automatic transmission oil cooler

Durable Design and Precise Fitment for Heavy-Duty Trucks

This Dorman automatic transmission oil cooler (part number 918-293) is specifically compatible with Chevrolet and GMC heavy-duty models including Sierra 2500 HD, Sierra 2500 HD Classic, Sierra 3500, Sierra 3500 Classic, Silverado 2500 HD, Silverado 2500 HD Classic, Silverado 3500, and Silverado 3500 Classic. The aluminum core ensures efficient cooling while the black finish provides resistance against environmental wear. The cooler’s 8-row core design maximizes surface area for heat exchange, helping maintain transmission fluid at safe operating temperatures during demanding driving conditions.

Common Applications and Problem Resolution

• Prevents transmission overheating under heavy load or towing conditions
• Reduces risk of transmission fluid breakdown and related damage
• Helps maintain consistent transmission performance and longevity
• Addresses leaks or damage from worn or faulty original coolers
• Supports cooling system efficiency in Chevrolet and GMC 2500 and 3500 series trucks

Installation Notes and Tips

The Dorman 918-293 cooler installs using O-ring compression for the inlet and quick connect fittings for the outlet, ensuring a secure and leak-resistant connection. Installation hardware is not included, so verify compatibility with your vehicle’s existing mounting points and hardware. Properly inspect and replace any worn seals or hoses during installation to maintain system integrity.

Quality Assurance and Warranty Information

This automatic transmission oil cooler is manufactured to meet standard replacement quality requirements. Constructed from durable aluminum with a protective black finish, it is designed to provide reliable service life. Please consult Dorman’s warranty policy for specific coverage details related to this part number 918-293.