Audi A4 Quattro Air Filter by APR, High Flow Cotton-Gauze (2002–2009). A direct drop-in that replaces the stock paper element with a durable, washable filter for stronger airflow and long service life.

Its flow-bench optimized media lowers pressure drop versus stock while maintaining excellent filtration, helping the engine breathe more efficiently. Built from proprietary cotton-gauze and sized for the B6/B7 airbox (approx. 263 x 211 mm), it fits A4 Quattro 2002–2009 and suits stock or tuned setups. Expect crisper throttle response and a subtle increase in intake sound, with no negative impact on emissions.

Features

• Washable, reusable cotton-gauze element
• Lower pressure drop and higher flow than stock
• Direct fit for B6/B7 A4 Quattro (approx. 263 x 211 mm)
• Compatible with factory airbox; works NA and turbo
• Flow-bench optimized design; durable construction

Questions about fitment or performance? Call us. We have locations in Austin, Texas and the Los Angeles, California area offering installation and customization: 512-982-9393 (TX), 562-981-6800 (CA).

Ordering multiple items? Contact us for shipping discounts. We install on premises at both locations.

CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov