Dorman 911-428 EGR Valve

Reliable EGR Valve for Chevrolet and GMC Trucks

The Dorman 911-428 Exhaust Gas Recirculation (EGR) Valve is designed to meet the emission control needs of various Chevrolet and GMC models. This vacuum-operated poppet valve helps regulate exhaust gases, ensuring your vehicle runs efficiently and complies with emission standards.

• Vacuum operated poppet EGR valve for precise exhaust gas recirculation
• Includes one gasket for proper sealing and installation
• Mounts securely with two bolt-on holes (mounting hardware not included)
• Compatible with multiple Chevrolet and GMC trucks and SUVs
• Negative backpressure design with one vacuum port (0.14 in diameter)

Product Details and Specifications

The Dorman 911-428 EGR valve features a vacuum-operated poppet design that controls the flow of exhaust gases back into the intake manifold. This helps reduce nitrogen oxide emissions and improves combustion efficiency. The valve includes a gasket to ensure a tight seal during installation. It mounts using two bolt-on holes, though mounting hardware is not included. The valve has one vacuum port sized at 0.14 inches, designed for negative backpressure operation. This EGR valve is compatible with a range of Chevrolet and GMC models including Blazer, C1500, C2500, Suburban variants, Jimmy, K1500, K2500, R-series trucks, and V-series vans.

Compatible Vehicles and Applications

• Chevrolet Blazer, C1500, C1500 Suburban, C2500, C2500 Suburban
• GMC Jimmy, K1500, K1500 Suburban, K2500, K2500 Suburban
• Chevrolet and GMC R10, R20, R20 Suburban, R1500, R1500 Suburban, R2500, R2500 Suburban
• V-series vans including V10, V10 Suburban, V20, V20 Suburban, V1500, V1500 Suburban, V2500, V2500 Suburban

Common Issues Addressed by This EGR Valve

• Engine rough idling caused by faulty EGR valve operation
• Increased emissions and failed emission tests
• Check engine light triggered by EGR system faults
• Reduced fuel efficiency due to improper exhaust gas recirculation
• Engine knocking or pinging related to exhaust gas flow problems

Installation Notes and Tips

Before installation, ensure the engine is cool and disconnect the battery. The Dorman 911-428 mounts with two bolts; however, mounting hardware is not included, so retain or replace bolts as needed. Replace the included gasket to prevent exhaust leaks. Verify vacuum line connections to the single vacuum port (0.14 inch diameter) for proper operation. After installation, clear any diagnostic trouble codes and test drive to confirm proper function.

Quality Assurance and Warranty

Dorman parts are engineered to meet or exceed OEM specifications for fit and function. The 911-428 EGR valve undergoes rigorous testing to ensure durability and reliable performance in emission control systems. This part includes a gasket and is backed by Dorman's limited warranty, providing coverage against defects in materials and workmanship under normal use.