Hella 7.22166.39.0 Secondary Air Injection Pump

The Hella 7.22166.39.0 is a high-quality secondary air injection pump designed to reduce emissions during engine cold start and warm-up phases. This electric air pump actively injects fresh air into the exhaust stream, providing additional oxygen to promote post-combustion of unburned hydrocarbons and carbon monoxide before they reach the catalytic converter.

Key Features:

• Electric pump design for active secondary air injection
• Reduces harmful emissions during cold start phase
• Helps catalytic converter reach operating temperature faster
• Direct-fit replacement for worn or failed OE pumps
• Engineered to OEM specifications for reliable performance
• Designed to work with engine control unit diagnostics

Secondary air injection systems are critical emissions control components that operate during the first 100 seconds after cold engine start. By supplying additional oxygen to the exhaust, this pump enables the catalytic converter to begin reducing emissions more quickly. The system is monitored by the engine control unit, and a failed pump will typically trigger the check engine light. This Hella replacement pump restores proper secondary air system function and helps your vehicle meet emissions standards.