Hella 7.03280.04.0 Secondary Air Injection Control Valve

The Hella 7.03280.04.0 Secondary Air Injection Control Valve is a critical component in your vehicle's emissions control system, designed to regulate the flow of fresh air into the exhaust stream during cold start conditions. This pneumatic control valve works in conjunction with the engine control unit to reduce harmful emissions during the warm-up phase when the catalytic converter has not yet reached optimal operating temperature.

Key Features:

• Precision-engineered control valve for secondary air injection systems
• Operates via vacuum actuation from the intake manifold
• Controls air flow to the combination valve during system operation
• Helps reduce HC and CO emissions during cold start phase
• Direct replacement for worn or failed original equipment valves
• Manufactured by Hella, a trusted OEM supplier to major automakers

This control valve opens when activated by the engine control unit, allowing intake manifold vacuum to operate the combination valve and permit secondary air flow into the exhaust manifold. The valve closes when the system deactivates after the engine reaches operating temperature, typically after 100 seconds of operation. Proper function of this valve is essential for passing emissions testing and preventing check engine light illumination due to secondary air system faults.