Hella 7.04389.07.0 Secondary Air Injection Pump

The Hella 7.04389.07.0 is a high-quality secondary air injection pump designed to reduce vehicle emissions during cold start and warm-up phases. This electric pump actively injects fresh air into the exhaust stream, allowing unburned hydrocarbons and carbon monoxide to undergo secondary combustion before reaching the catalytic converter.

Key Features:

• OEM-quality construction from HELLA, a leading automotive supplier and part of the FORVIA Group
• Electric pump design provides active air injection for optimal emissions control
• Helps catalytic converter reach operating temperature more quickly during cold starts
• Controlled by the engine control unit for precise operation timing
• Reduces harmful emissions to meet strict environmental standards
• Direct replacement for worn or failed original equipment pumps

Secondary air injection pumps typically operate for approximately 100 seconds during cold start conditions, pumping fresh air into the exhaust manifold to promote complete combustion of excess fuel. This process generates additional heat that accelerates catalytic converter warm-up, significantly reducing emissions during the critical cold-start phase when catalytic converters are least efficient.