This AEM performance air intake system lets the inline-6 in specific BMW 3 Series models breathe more freely than the restrictive factory air intake housing, adding horsepower and torque. Air enters from the factory fresh air inlets through a replacement air duct into a roto-molded, aerodynamic AEM air box containing an oversized AEM Dryflow synthetic washable air filter. The cone-shaped AEM Dryflow air filter is made from an oil-free, synthetic filter media rated for up to 100,000 miles before cleaning is needed, depending on driving conditions. Installation uses commonly available hand tools, and the intake is backed by AEM's Lifetime Limited Warranty. Some AEM air intakes are not legal for sale or use in California and other states adopting California emission standards, while others are 50 state legal; confirm legal status for this specific vehicle application before purchase.
Installation InstructionsAdditional Documentation
Specifications:
- Filter Media: AEM Dryflow, cone-shaped, washable, reusable, oil-free synthetic
- Filter Life: up to 100,000 miles before cleaning (driving-condition dependent)
- Roto-molded, aerodynamic AEM air box with replacement air duct
- Warranty: AEM Lifetime Limited Warranty
- Part Number: 21-841DS
Vehicle Applications
- 2007 BMW 328i Base
- 2008 BMW 328i Base
- 2009 BMW 328i Base
- 2010 BMW 328i Base
- 2011 BMW 328i Base
- 2012 BMW 328i Base
- 2013 BMW 328i Base
- 2009 BMW 328i xDrive Base
- 2010 BMW 328i xDrive Base
- 2012 BMW 328i xDrive Base
- 2013 BMW 328i xDrive Base
- 2007 BMW 328xi Base
- 2008 BMW 328xi Base
FAQ
Which BMW 3 Series models fit the AEM 21-841DS?
AEM's fitment data lists 2007-2013 328i, 2007-2008 328xi, and 328i xDrive for 2009-2010 and 2012-2013 specifically — 2011 xDrive is not listed in AEM's application table.
How does air reach the filter on the AEM 21-841DS?
Through the factory fresh air inlets and a replacement air duct, into a roto-molded aerodynamic AEM air box housing the Dryflow filter.
How long does the AEM Dryflow filter last before cleaning?
Up to 100,000 miles depending on driving conditions, since it's a washable, oil-free synthetic media rather than a disposable paper filter.
