Hella 7.04389.04.0 Secondary Air Injection Pump

The Hella 7.04389.04.0 Secondary Air Injection Pump is an electric pump that operates at 12 volts, providing reliable air injection to the exhaust system during cold starts to reduce harmful emissions and improve vehicle performance. Manufactured by Pierburg and distributed by Hella, combining expertise from two companies with over 120 years of automotive industry partnership, this pump represents OEM-quality engineering for demanding emission control applications.

Key Features:

• Injects fresh air into the exhaust flow during cold start phases to enable secondary combustion reactions that reduce HC and CO emissions while quickly bringing the catalytic converter to operating temperature
• 12-volt electric operation for consistent performance and quick response
• Meets or exceeds OE specifications for assured quality and reliability
• High-quality construction from Pierburg, known for premium automotive components
• Designed for select Mercedes-Benz models
• Active system design that blows air directly into the exhaust system

Pierburg develops advanced systems that allow engines to maintain excellent performance while minimizing environmental impact. This secondary air injection pump is a critical component in modern emission control systems, helping vehicles meet increasingly strict emissions standards while ensuring optimal engine operation during the critical warm-up period.