Dorman 918-291 Automatic Transmission Oil Cooler

Overview of Dorman 918-291 Automatic Transmission Oil Cooler

The Dorman 918-291 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: 22.5 inches width, 10.5 inches height, 1.25 inches depth
• Five core rows for efficient heat dissipation
• Inlet and outlet diameters of 0.48 inches with hose barb attachment
• Standard replacement grade for dependable performance
• Black finish for corrosion resistance and durability
• Compatible with Chevrolet Silverado and GMC Sierra heavy-duty models

Detailed Product Description

This automatic transmission oil cooler by Dorman (part number 918-291) features a robust aluminum core with five rows, providing effective heat exchange to protect your transmission system. The cooler measures 22.5 inches wide, 10.5 inches tall, and 1.25 inches deep, making it suitable for installation in tight engine compartments. Both the inlet and outlet have 0.48-inch hose barb fittings, ensuring secure and leak-free connections. The black finish adds an extra layer of protection against environmental factors, extending the cooler's service life.

Compatible Vehicles and Applications

This transmission oil cooler is compatible with select Chevrolet and GMC heavy-duty trucks, including:

• Chevrolet Silverado 2500 HD and 3500 HD
• GMC Sierra 2500 HD and 3500 HD
• Silverado 3500 models

It is designed as a standard replacement part, meeting OEM specifications for these models to maintain proper transmission fluid temperatures under demanding conditions.

Common Issues Addressed by This Transmission Oil Cooler

• Overheating of automatic transmission fluid during heavy towing or hauling
• Reduced transmission efficiency due to elevated fluid temperatures
• Premature transmission wear caused by inadequate cooling
• Fluid leaks from damaged or corroded coolers
• Transmission shifting problems related to overheating

Installation Notes and Tips

• Installation hardware is not included; verify compatibility with existing fittings
• Ensure hose barb connections are secure and free of leaks
• Inspect transmission fluid lines for wear or damage before installation
• Flush transmission fluid system if necessary to remove contaminants
• Follow vehicle manufacturer guidelines for transmission cooler replacement

Quality Assurance and Warranty

Dorman 918-291 is manufactured to meet standard replacement quality, using corrosion-resistant aluminum for durability. While specific warranty details may vary, Dorman typically offers limited warranties on their replacement parts to ensure customer confidence and product reliability.