Dorman 918-400 Engine Oil Cooler

Reliable Engine Oil Cooler for Chevrolet and GMC Trucks

The Dorman 918-400 engine oil cooler is designed to maintain optimal engine temperatures for heavy-duty Chevrolet and GMC trucks. Engineered with durable aluminum and a brushed metal finish, this cooler supports efficient heat dissipation to protect your engine under demanding conditions.

• Core material constructed from lightweight, corrosion-resistant aluminum
• Dimensions: 3.281 inches length, 3.096 inches width and thickness, 2.35 inches depth
• Inlet and outlet diameters both 0.72 inches with female fitting types for secure connections
• Includes mounting hardware: 7 bolts, 4 nuts, 5 o-rings, and 5 gaskets for complete installation
• Standard replacement grade designed for durability and performance
• Core features 11 rows with 0.155 inch tube width for effective cooling

Detailed Product Description

The Dorman 918-400 engine oil cooler is specifically engineered for compatibility with Chevrolet Express 2500, Express 3500, GMC Savana 2500, Savana 3500, and various Sierra and Silverado 2500 and 3500 HD models. Its aluminum core ensures efficient heat transfer while resisting corrosion, and the brushed metal finish adds durability against environmental factors. The cooler’s compact size and precise dimensions allow for a straightforward replacement process without modifications. Both inlet and outlet ports feature female fittings with a 0.72-inch diameter, ensuring a secure and leak-free connection to your vehicle’s oil system.

Common Applications and Issues Addressed

• Prevents engine oil overheating during heavy towing or hauling
• Reduces risk of engine damage caused by excessive oil temperatures
• Helps maintain consistent oil viscosity for improved engine lubrication
• Replaces worn or damaged oil coolers to restore proper cooling function
• Addresses leaks or blockages in the existing oil cooler system

Installation Notes and Tips

Installation of the Dorman 918-400 engine oil cooler includes all necessary mounting hardware for a complete replacement. Ensure the engine is cool before beginning installation. Carefully remove the old cooler and clean the mounting surface to prevent leaks. Use the included gaskets and o-rings to secure a tight seal. Verify that inlet and outlet fittings are properly connected to avoid oil leaks. Follow vehicle-specific service manual instructions for torque specifications on bolts and nuts.

Quality Assurance and Warranty

This engine oil cooler is a standard replacement part manufactured to meet OEM specifications for Chevrolet and GMC heavy-duty trucks. Dorman provides quality assurance through rigorous testing and material standards. While a core charge is not applicable for this part, it includes a limited warranty covering defects in materials and workmanship. Refer to Dorman’s warranty policy for detailed coverage information.