Bosch 0580000040 Secondary Air Injection Pump

The Bosch 0580000040 is an original equipment (OE) quality secondary air injection pump designed for select Mercedes-Benz C250 and SLK250 vehicles equipped with 1.8L turbocharged engines. This emissions control component plays a critical role in reducing harmful hydrocarbon and carbon monoxide emissions during cold start conditions.

Key Features:

• Electric vane pump design for reliable air delivery into the exhaust stream
• Activates during cold starts to inject fresh air into the exhaust manifold
• Helps rapidly bring catalytic converter to optimal operating temperature
• Reduces HC and CO emissions by up to 88% and 93% respectively during warm-up phase
• Filtered air intake to protect internal components from contamination
• Works in conjunction with combination valve and control solenoid
• OE replacement part compatible with Mercedes-Benz part number A0001406785

How It Works:

During engine cold start, the ECU commands this pump to inject ambient air into the exhaust manifold for approximately 30-90 seconds. This oxygen-rich air promotes secondary combustion of unburned fuel in the exhaust stream, significantly reducing emissions before the catalytic converter reaches operating temperature. Once the catalyst is warm and lambda control becomes active, the system automatically shuts off.

This Bosch secondary air injection pump ensures your Mercedes-Benz meets strict emissions standards while maintaining optimal engine performance. Regular replacement of a failed pump prevents check engine lights, failed emissions tests, and potential catalytic converter damage.