Get fresh air moving into the exhaust on cold start-up with the Bosch Secondary Air Injection Pump (P/N 0580000025). This electric pump forces extra air into the exhaust stream during warm-up, helping the catalytic converter reach operating temperature faster so the engine meets its cold-start emissions targets. It installs as a direct-fit replacement for a wide range of Mercedes-Benz models, including the 2006-2009 C230, 2008-2012 C300, 2006-2011 E350, 2007-2011 S550, 2006-2011 ML350, and 2007-2012 SL550 — see the Buyer's Guide tab for the full list of covered applications.
If the original secondary air pump is the cause of a related cold-start emissions code or no air flow to the exhaust on start-up, this Bosch unit replaces it. Diagnose the fault before ordering, since check valves, hoses, and the control relay can produce similar symptoms.
Interchange: 0001405185
This part cross-references / interchanges with the following part numbers:
What does this Bosch secondary air injection pump do?
It pumps fresh air into the exhaust stream during cold start-up, helping the catalytic converter warm up faster so the engine can meet its cold-start emissions targets.
Is this a genuine Bosch part?
Yes. It is an actual OE Bosch air pump, built to the original component's fit, form, and function specifications.
Will it fit my vehicle?
It is a direct-fit replacement for many Mercedes-Benz models from 2006 onward, such as the C230, C300, E350, S550, ML350, and SL550. Check the Buyer's Guide tab for the full list.
What are signs the air pump may need replacing?
Common signs include a cold-start emissions or secondary-air code and no airflow to the exhaust on start-up. Have the fault diagnosed, since check valves, hoses, and the relay can cause similar symptoms.
Is installation difficult?
It is designed as a plug-and-play unit that connects and mounts like the factory pump for a straightforward replacement. Follow the vehicle service procedure for correct steps and fasteners.
WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
