K&N 33-2209 High-Flow Air Filter for 2001-2009 Audi A4 B6 B7 S4 RS4 Seat Exeo

Vehicle Fitment

• 2001-2005 Audi A4 / B6 (All Trims, 1.8T / 2.0L / 2.4L / 3.0L / TDI, FWD & Quattro AWD - Sedan & Avant)
• 2001-2006 Audi A4 Cabriolet / B6 (All Trims, 1.8T / 2.4L / 3.0L, FWD & Quattro AWD)
• 2003-2005 Audi S4 / B6 (All Trims, V8 4.2L, Quattro AWD - Sedan, Avant & Cabriolet)
• 2005-2009 Audi A4 / B7 (All Trims, 1.8T / 2.0 TFSI / 2.0 TDI / 3.0 TDI / 3.2 FSI, FWD & Quattro AWD - Sedan, Avant & Cabriolet)
• 2005-2008 Audi S4 / B7 (All Trims, V8 4.2L, Quattro AWD - Sedan, Avant & Cabriolet)
• 2006-2008 Audi RS4 / B7 (All Trims, V8 4.2L FSI, Quattro AWD - Sedan, Avant & Cabriolet)
• 2009-2013 Seat Exeo / 3R (All Trims, 1.6L / 1.8T / 2.0 TDI / 2.0 TFSI - European Market)

Fitment Notes

• Audi A4 B6 fitment covers all engine variants (1.8T, 2.0L, 2.4L, 3.0L, TDI) across Sedan, Avant, and Cabriolet body styles for both FWD and Quattro AWD
• Audi A4 B7 fitment confirmed for all engine codes including 2.0 TFSI (BPY/BWT), 2.0 TDI, 3.0 TDI, and 3.2 FSI
• Some B7 owners report fitment requires careful seating - confirm airbox closure before finalizing installation
• Audi RS4 B7 fitment confirmed for the 4.2L FSI V8 in Sedan, Avant, and Cabriolet variants
• Seat Exeo is based on the Audi A4 B6/B7 platform and uses the same airbox - fitment confirmed for all Exeo variants
• Does not fit Audi A4 B8 (2008+) - that generation requires K&N 33-2945
• Does not fit Audi A4 B5 (1994-2001) - see K&N 33-2125 for that application

Features

• Drop-in replacement - installs directly into the factory airbox with no modifications
• 4-layer oiled cotton gauze media for high airflow and reliable contaminant capture
• Engineered to increase horsepower and acceleration over stock paper filters
• Pre-oiled and ready to install straight out of the box
• Washable and reusable - cleaning interval every 75,000 miles under normal conditions
• Compatible with OEM airbox and factory MAF sensors - no recalibration required
• Reduces long-term filter replacement costs and environmental waste
• Backed by K&N's No-Hassle Lifetime Limited Warranty

Specifications

• Part Number: 33-2209
• Filter Style: Panel Air Filter
• Filter Media: Oiled Cotton Gauze
• Outside Length: 10.313 in (262 mm)
• Outside Width: 8.25 in (210 mm)
• Height: 1.125 in (29 mm)
• Compatible Engine Sizes: 1.6L, 1.8T, 2.0L, 2.0 TFSI, 2.0 TDI, 2.4L, 3.0L, 3.0 TDI, 3.2 FSI, V8 4.2L / 4.2 FSI
• Washable: Yes
• Warranty: No-Hassle Lifetime Limited

Included Components

• 1x K&N 33-2209 High-Flow Panel Air Filter

Product Description

The K&N 33-2209 is a washable, reusable drop-in replacement air filter engineered for the Audi A4 B6 and B7 platforms (2001-2009), covering every body style - Sedan, Avant, and Cabriolet - across the full engine range from the 1.8T through to the 4.2L FSI V8 of the RS4. It also fits the performance-oriented S4 B6 and B7 with the 4.2L V8, and the Seat Exeo, which shares the A4 B6/B7 platform. The filter drops directly into the factory airbox with no modification and is fully compatible with OEM MAF sensors and engine management systems.

Only needing cleaning every 75,000 miles, the K&N 33-2209 is a practical lifetime upgrade across one of Audi's most versatile and widely sold mid-size platforms. Whether installed in a daily-driven A4 2.0 TDI or a high-performance RS4 4.2 FSI, this filter delivers improved airflow and throttle response without voiding the factory warranty.