Pierburg 7.04389.02.0 Secondary Air Injection Pump

Reliable Electric Secondary Air Injection Pump for Dodge and Mercedes-Benz

The Pierburg 7.04389.02.0 Secondary Air Injection Pump is designed to support emission control systems in select Dodge and Mercedes-Benz vehicles. Operating on a 12-volt electric mode, this pump helps reduce harmful emissions by injecting air into the exhaust stream during cold starts.

• Electric operating mode ensures efficient air injection
• Compatible with 12V electrical systems
• Technical Information Number: Si 1150-11 for precise reference
• Fits a wide range of Mercedes-Benz models including C230, E350, GL450, and more
• Also compatible with Dodge Sprinter 2500 and 3500 models

Detailed Product Overview

The Pierburg Secondary Air Injection Pump 7.04389.02.0 is an essential component in the emission control system, specifically designed to operate electrically at 12 volts. This pump injects fresh air into the exhaust manifold to promote the oxidation of unburned hydrocarbons and carbon monoxide during engine warm-up. The electric operation mode provides reliable performance and quick response, which is critical for meeting emission standards in vehicles such as the Mercedes-Benz C-Class (C230, C250, C280, C300, C350), E-Class (E280, E300, E350, E550), and SUVs like the GL450, GL550, ML350, ML450, and ML550. It is also compatible with the Dodge Sprinter 2500 and 3500 models, ensuring broad application across these makes.

Common Applications and Problem Resolution

• Helps reduce cold start emissions by injecting air into the exhaust system
• Addresses secondary air injection system failure codes
• Prevents rough idling and poor engine performance related to air injection issues
• Mitigates increased emissions and failed emissions tests
• Resolves pump noise or electrical failure in the secondary air injection system

Installation Notes and Tips

When installing the Pierburg 7.04389.02.0 secondary air injection pump, ensure the vehicle’s 12V electrical system is functioning properly. Verify compatibility with your specific Dodge or Mercedes-Benz model before installation. It is recommended to inspect related hoses and check valves for wear or damage during replacement to maintain optimal system performance.

Quality Assurance and Warranty

Manufactured by Pierburg, a recognized name in emission control components, this secondary air injection pump meets OEM specifications for fit and function. The part is referenced under Technical Information Number Si 1150-11, ensuring traceability and quality standards. Warranty details should be confirmed with the distributor or installer.