CF11179 Cabin Air Filter with Activated Carbon for Audi A4/A5, Q5, Porsche Macan 2015-2018

Q: Will this Audi Q5 cabin air filter fit my Q5?

A: Q5 fitment depends on year and engine. Listed applications include 2010–2017 Q5 with 2.0L L4 or 3.0L V6 engines and 2009–2012 Q5 with the 3.2L V6. Confirm the exact year and engine before ordering.

Q: Is this a cabin air filter or an engine air filter?

A: This is a cabin air filter for the HVAC cabin air intake. It is not an engine air filter.

Q: Is this an activated carbon cabin air filter?

A: Yes. CF11179 is specified as an activated carbon cabin air filter.

Q: Is CF11179 a HEPA cabin air filter?

A: No HEPA designation is specified for this product, so it should not be represented as a HEPA filter.

Q: Can this be used as an Audi A4 cabin air filter or Audi A5 cabin air filter?

A: Yes, for the listed A4 and A5 applications only. Exact years and engines vary by A4, A4 Quattro, A4 allroad, A5, and A5 Quattro configuration, so match the fitment table before purchase.

Q: Does this fit a Porsche Macan?

A: Listed Porsche Macan applications include 2017–2018 2.0L L4 and 2015–2018 3.0L or 3.6L V6 models.

Q: How often should cabin air filter replacement be performed?

A: Follow the maintenance schedule for the exact vehicle. Earlier inspection may be appropriate under heavy dust, pollen, or similar contamination rather than using one universal mileage interval for every application.

Q: Can a dirty or clogged cabin air filter reduce HVAC airflow?

A: A loaded or clogged cabin air filter can contribute to reduced HVAC airflow, but restricted airflow can also have other HVAC causes.

Q: Will replacing this filter eliminate a musty or unusual HVAC odor?

A: Not necessarily. Filter replacement can be part of an odor inspection, but moisture, drains, ducts, or other HVAC conditions can also contribute to persistent odor.

Q: Are tools required for cabin air filter replacement?

A: Access and tool requirements vary by vehicle. Follow the procedure for the exact application rather than assuming a tool-free replacement.

Q: Which way should the airflow arrow face during installation?

A: Follow the markings on the filter and filter housing for the exact vehicle. A universal airflow direction should not be assumed across every application.

Q: Which OE or replacement reference numbers can be compared before ordering?

A: Reference numbers include CF11179, CAF1877C, PC6071C, 8K0819439, 8K0819439A, 042-2150, 0422150, CAF1857P, F4227, F4227C, VF3009, FCAF1857P, CAF1857C, LA386, 4227, C36071C, and 24227.