Dorman 918-249 Automatic Transmission Oil Cooler - Auxiliary

Reliable Automatic Transmission Oil Cooler for Chevrolet and GMC Trucks

The Dorman 918-249 automatic transmission oil cooler is designed to provide efficient cooling for heavy-duty Chevrolet and GMC trucks. Engineered with durable aluminum and a compact design, this transmission cooler helps maintain optimal transmission temperatures for reliable performance.

• Constructed from corrosion-resistant aluminum with a black finish
• Core features 16 rows for effective heat dissipation
• Compact dimensions: 8.7 inches height, 13.4 inches width, and 1.3 inches depth
• Inlet and outlet diameters both measure 0.31 inches with hose barb attachment types
• Standard replacement grade for dependable service
• Compatible with Chevrolet Silverado and GMC Sierra 2500 HD and 3500 models, including Classic versions

Product Details and Specifications

The Dorman 918-249 transmission oil cooler is built with a 16-row aluminum core that efficiently dissipates heat from the transmission fluid, helping to prevent overheating during heavy towing or extended operation. Its black finish offers corrosion resistance, extending the cooler's service life. The cooler measures 8.7 inches in height, 13.4 inches in width, and 1.3 inches in depth, making it a compact yet effective component. Both the inlet and outlet feature 0.31-inch hose barb fittings, ensuring secure and leak-free connections. This unit is a standard replacement part designed to meet OEM specifications for Chevrolet Silverado 2500 HD, Silverado 3500, Sierra 2500 HD, and Sierra 3500 models, including Classic variants.

Compatible Vehicles and Applications

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

This transmission cooler is intended for use in automatic transmission systems to help regulate fluid temperature and maintain transmission efficiency under demanding conditions.

Common Issues Addressed by This Transmission Oil Cooler

• Prevents transmission fluid overheating during heavy towing or hauling
• Reduces risk of transmission damage caused by excessive heat
• Improves transmission fluid longevity and performance
• Helps maintain consistent transmission operating temperature
• Supports overall transmission system reliability in Chevrolet and GMC heavy-duty trucks

Installation Notes and Tips

The Dorman 918-249 transmission oil cooler is designed for straightforward installation using existing hose barb connections. Note that installation hardware is not included, so ensure you have the appropriate clamps and fittings on hand. Properly secure all hose connections to prevent leaks and verify compatibility with your vehicle’s transmission cooling system. It is recommended to inspect the transmission fluid and cooling lines during installation for any signs of wear or damage.

Quality Assurance and Warranty Information

Dorman manufactures this transmission oil cooler to meet standard replacement quality, ensuring reliable performance and durability. The aluminum construction provides corrosion resistance and long service life. While specific warranty details may vary, Dorman typically offers limited warranties on their replacement parts to cover defects in materials and workmanship.