Dorman 918-238 Automatic Transmission Oil Cooler

Overview of the Dorman 918-238 Automatic Transmission Oil Cooler

The Dorman 918-238 automatic transmission oil cooler is designed to provide reliable cooling performance for select Lexus and Toyota vehicles. Engineered with durable aluminum and a black finish, this cooler helps maintain optimal transmission temperatures for improved vehicle operation.

• Constructed from lightweight, corrosion-resistant aluminum
• Compact dimensions: 3.8 inches height, 10 inches width, and 1.3 inches depth
• Features 8 core rows for efficient heat dissipation
• Inlet and outlet diameters approximately 18.3 mm with hose barb attachment types
• Standard replacement grade for dependable performance
• Includes cooler and mounting brackets for installation

Detailed Product Description

The Dorman 918-238 automatic transmission oil cooler is specifically designed for compatibility with Lexus 4Runner and Toyota GX470 models. Its aluminum construction ensures durability and resistance to corrosion, while the black finish provides additional protection against environmental factors. The cooler’s 8-row core design maximizes surface area for effective heat exchange, helping to maintain transmission fluid at optimal temperatures. With inlet and outlet hose barb fittings sized at approximately 18.3 mm, this cooler integrates seamlessly with existing transmission fluid lines. The compact size allows for straightforward installation in tight engine compartments without compromising cooling efficiency.

Common Applications and Problem Resolution

• Prevents transmission overheating during heavy towing or off-road driving
• Replaces damaged or leaking transmission oil coolers
• Improves transmission fluid cooling to extend transmission life
• Addresses reduced cooling efficiency due to clogged or corroded coolers
• Supports consistent transmission performance in Lexus 4Runner and Toyota GX470 vehicles

Installation Notes and Tips

Installation of the Dorman 918-238 cooler requires basic mechanical skills and appropriate tools. Ensure the vehicle is cool and safely supported before beginning. The cooler mounts using included brackets; however, installation hardware such as hose clamps is not included and must be sourced separately. Verify hose barb connections are secure and free of leaks after installation. It is recommended to inspect transmission fluid levels and condition following cooler replacement.

Quality Assurance and Warranty

Dorman provides this automatic transmission oil cooler as a standard replacement part, manufactured to meet or exceed OEM specifications. The aluminum construction and finish contribute to long-term durability. While specific warranty details are not provided here, Dorman typically offers limited warranties on their replacement parts to ensure customer confidence and product reliability.