Dorman 918-517 Automatic Transmission Oil Cooler

Reliable Automatic Transmission Oil Cooler for Ram 2500 and 3500

The Dorman 918-517 automatic transmission oil cooler is designed to maintain optimal transmission temperatures for Ram 2500 and 3500 models. Constructed with durable aluminum, this cooler ensures efficient heat dissipation and reliable performance under demanding conditions.

• Constructed from high-quality aluminum core and housing for effective heat transfer
• Measures 25.7 inches in length, 11.75 inches in height, and 0.908 inches in width
• Features 25 cooling rows for enhanced transmission fluid cooling
• Threaded inlet and outlet attachment types for secure connections
• Finished with a painted black housing for corrosion resistance
• Standard replacement grade designed to meet OEM specifications

Durable Aluminum Construction and Precise Dimensions

This automatic transmission oil cooler by Dorman is built with an aluminum core and housing, providing excellent thermal conductivity and resistance to corrosion. The cooler measures 25.7 inches long, 11.75 inches high, and 0.908 inches wide, with a core tube width of 0.416 inches. It includes 25 cooling rows to maximize fluid cooling efficiency. Both the inlet and outlet feature threaded connections with diameters of 0.561 inches and 0.416 inches respectively, ensuring a secure fit with compatible transmission lines. The black painted finish adds an extra layer of protection against environmental wear.

Compatible With Ram 2500 and 3500 Models

This Dorman 918-517 automatic transmission oil cooler is specifically designed for use with Ram 2500 and 3500 trucks, providing a direct replacement solution for maintaining proper transmission fluid temperatures. It is ideal for owners seeking a reliable replacement part that matches original equipment standards.

Common Applications and Issues Addressed

• Prevents transmission overheating during heavy towing or hauling
• Helps avoid premature transmission wear caused by excessive heat
• Replaces damaged or leaking transmission oil coolers
• Improves transmission fluid cooling efficiency for extended component life
• Supports consistent transmission performance under high load conditions

Installation Notes and Tips

Ensure the vehicle is cool and safely supported before beginning installation. The Dorman 918-517 cooler uses threaded inlet and outlet fittings; verify compatibility with existing transmission lines. No mounting hardware is included, so retain original brackets or source appropriate hardware. Properly torque all fittings to prevent leaks and check for secure connections after installation.

Quality Assurance and Warranty

Dorman automatic transmission oil coolers are manufactured to meet or exceed OEM standards for fit, form, and function. This product is a standard replacement grade part designed for durability and reliable operation. Warranty details should be confirmed with the product documentation or supplier.