Pierburg 7.04389.04.0 Secondary Air Injection Pump

Pierburg Secondary Air Injection Pump 7.04389.04.0

Pierburg 7.04389.04.0 is a 12V electric secondary air injection pump for emission control on select Mercedes-Benz applications. It pushes fresh air into the exhaust during cold starts to help reduce emissions and support smooth engine operation.

Built as a standard replacement and backed by Genuine OE from HELLA branding, this pump is a direct-fit solution for Mercedes-Benz SLS AMG, CL600, S600, SL600, and other high-performance models that use the listed OE references.

Key Features

• Secondary air injection pump for emission control systems
• 12V electric operating mode
• Standard replacement grade
• OE-level application coverage for select Mercedes-Benz models
• Technical Information Number: SI 1150-11
• Brand line: Genuine OE from HELLA

Application Details

• Fits 2011-2015 Mercedes-Benz SLS AMG, N/A; 12V - Electric; Genuine OE from HELLA
• Fits 2007-2014 Mercedes-Benz CL600, N/A; With OE No. A0001404285; Genuine OE from HELLA
• Fits 2001-2002 Mercedes-Benz CL600, N/A; With OE No. A0001404285; Genuine OE from HELLA
• Fits 2008-2014 Mercedes-Benz CL65 AMG, N/A; With OE No. A0001404285; Genuine OE from HELLA
• Fits 2007-2013 Mercedes-Benz S600, N/A; With OE No. A0001404285; Genuine OE from HELLA
• Fits 2001-2002 Mercedes-Benz S600, N/A; With OE No. A0001404285; Genuine OE from HELLA
• Fits 2007-2013 Mercedes-Benz S65 AMG, N/A; With OE No. A0001404285; Genuine OE from HELLA
• Fits 2007-2011 Mercedes-Benz CLS63 AMG, N/A; With OE No. A0001404285; Genuine OE from HELLA
• Fits 2005-2011 Mercedes-Benz G55 AMG, N/A; With OE No. A0001404285; Genuine OE from HELLA
• Fits 2004-2011 Mercedes-Benz SL600, N/A; 12V - Electric; Genuine OE from HELLA
• Fits 2005-2011 Mercedes-Benz SLK55 AMG, N/A; With OE No. A0001404285; Genuine OE from HELLA
• Fits 2007-2009 Mercedes-Benz CLK63 AMG, N/A; With OE No. A0001404285; Genuine OE from HELLA
• Fits 2007-2009 Mercedes-Benz E63 AMG, N/A; With OE No. A0001404285; Genuine OE from HELLA
• Fits 2003-2008 Mercedes-Benz SL55 AMG, N/A; With OE No. A0001404285; Genuine OE from HELLA
• Fits 2007 Mercedes-Benz R63 AMG, N/A; With OE No. A0001404285; Genuine OE from HELLA
• Fits 2005-2006 Mercedes-Benz C55 AMG, N/A; With OE No. A0001404285; Genuine OE from HELLA
• Fits 2003-2006 Mercedes-Benz CL600, N/A; 12V - Electric; Genuine OE from HELLA
• Fits 2003-2006 Mercedes-Benz CLK55 AMG, N/A; With OE No. A0001404285; Genuine OE from HELLA
• Fits 2006 Mercedes-Benz CLS55 AMG, N/A; With OE No. A0001404285; Genuine OE from HELLA
• Fits 2003-2006 Mercedes-Benz E55 AMG, N/A; 12V - Electric; Genuine OE from HELLA
• Fits 2003-2006 Mercedes-Benz S600, N/A; 12V - Electric; Genuine OE from HELLA
• Fits 2002-2004 Mercedes-Benz C32 AMG, N/A; 12V - Electric; Genuine OE from HELLA

What It Helps Address

• Cold-start emissions issues related to secondary air delivery
• Faults caused by a weak or failed electric air injection pump
• Reduced exhaust aftertreatment performance during startup
• Check engine light concerns tied to air injection system operation
• Rougher cold-start behavior on affected Mercedes-Benz models

Installation Notes

Verify the OE number and electrical specification before installation. This pump is a 12V electric unit, so confirm the vehicle’s original configuration and match the listed application notes, especially where OE No. A0001404285 is specified. This part cross-references VEMO V30-63-0037 for the same application.

For Mercedes-Benz SLS AMG, CL600, S600, SL600, and related AMG applications, confirm the secondary air system diagnosis before replacing the pump to avoid repeat repairs.

Quality Assurance

Pierburg is supplied here as Genuine OE from HELLA, with OE-style application coverage and standard replacement construction for emission control service. Part number 7.04389.04.0 is identified with Technical Information Number SI 1150-11.