Dorman 904-937 Exhaust Gas Recirculation (EGR) Cooler

Durable Stainless Steel EGR Cooler for Chevrolet and GMC Trucks

The Dorman 904-937 Exhaust Gas Recirculation (EGR) Cooler is engineered specifically for heavy-duty Chevrolet and GMC trucks, including the Sierra 2500 HD, Sierra 3500 HD, Silverado 2500 HD, and Silverado 3500 HD models. Designed to meet emission control standards, this EGR cooler helps maintain engine efficiency and reduce harmful exhaust emissions.

• Constructed from corrosion-resistant stainless steel with a silver finish
• Flanged ends on both sides for secure mounting with 4 mounting holes each
• Includes 7 gaskets to ensure a proper seal and prevent leaks
• Tube-type heat exchanger design for effective exhaust gas cooling
• Specific fit for Chevrolet and GMC heavy-duty trucks, ensuring compatibility
• CARB certified for compliance with California Air Resources Board regulations
• Dimensions: 10 inches overall length, 7 inches height, and 4.8 inches width
• Port diameters: 2.65 inches (End 1), 3.2 inches (End 2), and 4.33 inches outlet inside diameter

Product Details and Specifications

The Dorman 904-937 EGR cooler is designed with precision to fit specific heavy-duty truck models from Chevrolet and GMC. Its stainless steel construction offers durability and resistance to high temperatures and corrosion, essential for the demanding environment of exhaust gas recirculation systems. Both ends feature flanged connections with four mounting holes each, providing a secure and stable installation. The included gaskets ensure a tight seal, preventing exhaust leaks that could affect engine performance or emissions compliance.

The tube-type heat exchanger efficiently cools exhaust gases before they re-enter the engine, helping to reduce nitrogen oxide (NOx) emissions and improve combustion efficiency. This part is CARB certified, meeting strict emission standards required in California and other regions with similar regulations.

Compatible Vehicles and Applications

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

This EGR cooler is intended for use in emission control systems to address issues such as:

• Excessive engine temperatures due to inefficient exhaust gas cooling
• Increased nitrogen oxide (NOx) emissions affecting compliance
• Reduced engine performance caused by faulty or clogged EGR coolers
• Potential exhaust leaks from damaged or worn seals
• Check engine light triggered by EGR system faults

Installation Notes and Tips

When installing the Dorman 904-937 EGR cooler, ensure all old gaskets and seals are removed and the mounting surfaces are clean to prevent leaks. Use the included gaskets to maintain a proper seal. Verify that the flanged ends align correctly with the exhaust system ports, and tighten mounting bolts evenly to the manufacturer’s torque specifications. Proper installation is critical to avoid exhaust leaks and maintain emission control system integrity.

Quality Assurance and Certification

Dorman manufactures this EGR cooler to meet OEM standards for fit, form, and function. The stainless steel construction provides long-lasting durability under high-heat conditions. This part is California Air Resources Board (CARB) certified, ensuring it complies with stringent emission regulations. While no specific warranty information is provided, Dorman parts typically undergo rigorous quality control to support reliable performance in heavy-duty applications.