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Audi A4 K&N Air Filter | A4 Performance Air Filters

Audi AccessoriesIf you want to add more performance to your Audi A4 a K&N performance air filter will do the job. K&N air filters use a washable and reusable filter element that out flows your factory Audi A4 air filter. K&N air filters are the industry standard in performance filters and Slickcar.com offers a complete line for your A4. With the Million Mile guarantee you will never need to buy another air filter for your Audi A4 . If you canít find the correct K&N performance filter for your Audi please call us toll free at 1-800-780-1409.
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• K&N Filters
Audi A4 Accessories
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Just a Few of the Audi A4 K&N Air Filters We Carry...

Audi A4 2002-2005 2.5l V6 Dsl K&N Replacement Air Filter

Audi A4 2002-2005  2.5l V6 Dsl  K&N Replacement Air Filter
33-2209
K&N Air Filter Fits 2002 2003 2004 2005 Audi A4
 
 MSRP: $73.49
Just: $48.99 Each

Audi A4 2007-2007 1.8l L4 F/I 163bhp K&N Replacement Air Filter

Audi A4 2007-2007  1.8l L4 F/I 163bhp K&N Replacement Air Filter
33-2209
K&N Air Filter Fits 2007 Audi A4
 
 MSRP: $73.49
Just: $48.99 Each

Audi A4 1998-1999 2.5l V6 Dsl K&N Replacement Air Filter

Audi A4 1998-1999  2.5l V6 Dsl  K&N Replacement Air Filter
33-2125
K&N Air Filter Fits 1998 1999 Audi A4
 
 MSRP: $73.49
Just: $48.99 Each

Audi A4 2004-2007 3.0l V6 Dsl K&N Replacement Air Filter

Audi A4 2004-2007  3.0l V6 Dsl  K&N Replacement Air Filter
33-2209
K&N Air Filter Fits 2004 2005 2006 2007 Audi A4
 
 MSRP: $73.49
Just: $48.99 Each

Audi A4 2008-2009 2.0l L4 Dsl K&N Replacement Air Filter

Audi A4 2008-2009  2.0l L4 Dsl  K&N Replacement Air Filter
33-2945
K&N Air Filter Fits 2008 2009 Audi A4
 
 MSRP: $74.99
Just: $49.99 Each

Audi A4 2008-2008 Quattro 2.0l L4 F/I K&N Replacement Air Filter

Audi A4 2008-2008  Quattro 2.0l L4 F/I  K&N Replacement Air Filter
33-2209
K&N Air Filter Fits 2008 Audi A4
 
 MSRP: $73.49
Just: $48.99 Each

Audi A4 2000-2001 2.5l V6 Dsl 150bhp K&N Replacement Air Filter

Audi A4 2000-2001  2.5l V6 Dsl 150bhp K&N Replacement Air Filter
33-2125
K&N Air Filter Fits 2000 2001 Audi A4
 
 MSRP: $73.49
Just: $48.99 Each

Audi A4 2000-2008 3.0l V6 F/I K&N Replacement Air Filter

Audi A4 2000-2008  3.0l V6 F/I  K&N Replacement Air Filter
33-2209
K&N Air Filter Fits 2000 2001 2002 2003 2004 2005 2006 2007 2008 Audi A4
 
 MSRP: $73.49
Just: $48.99 Each

Audi A4 2008-2009 4.2l V8 F/I K&N Replacement Air Filter

Audi A4 2008-2009  4.2l V8 F/I  K&N Replacement Air Filter
E-1987
K&N Air Filter Fits 2008 2009 Audi A4
 
 MSRP: $85.49
Just: $56.99 Each

Audi A4 2008-2008 2.0l L4 F/I K&N Replacement Air Filter

Audi A4 2008-2008  2.0l L4 F/I  K&N Replacement Air Filter
33-2209
K&N Air Filter Fits 2008 Audi A4
 
 MSRP: $73.49
Just: $48.99 Each

Audi A4 2001-2007 1.9l L4 Dsl K&N Replacement Air Filter

Audi A4 2001-2007  1.9l L4 Dsl  K&N Replacement Air Filter
33-2209
K&N Air Filter Fits 2001 2002 2003 2004 2005 2006 2007 Audi A4
 
 MSRP: $73.49
Just: $48.99 Each

Audi A4 2009-2009 Quattro 3.2l V6 F/I Exc. Cabriolet K&N Replacement Air Filter

Audi A4 2009-2009  Quattro 3.2l V6 F/I Exc. Cabriolet K&N Replacement Air Filter
E-1987
K&N Air Filter Fits 2009 Audi A4
 
 MSRP: $85.49
Just: $56.99 Each

Audi A4 2002-2005 Quattro 1.8l L4 F/I K&N Replacement Air Filter

Audi A4 2002-2005  Quattro 1.8l L4 F/I  K&N Replacement Air Filter
33-2209
K&N Air Filter Fits 2002 2003 2004 2005 Audi A4
 
 MSRP: $73.49
Just: $48.99 Each

Audi A4 2005-2007 Quattro 2.0l L4 F/I K&N Replacement Air Filter

Audi A4 2005-2007  Quattro 2.0l L4 F/I  K&N Replacement Air Filter
33-2209
K&N Air Filter Fits 2005 2006 2007 Audi A4
 
 MSRP: $73.49
Just: $48.99 Each

Audi A4 2009-2009 3.0l V6 F/I K&N Replacement Air Filter

Audi A4 2009-2009  3.0l V6 F/I  K&N Replacement Air Filter
E-1987
K&N Air Filter Fits 2009 Audi A4
 
 MSRP: $85.49
Just: $56.99 Each

Audi A4 2009-2009 Quattro 2.0l L4 F/I Exc. Cabriolet K&N Replacement Air Filter

Audi A4 2009-2009  Quattro 2.0l L4 F/I Exc. Cabriolet K&N Replacement Air Filter
33-2945
K&N Air Filter Fits 2009 Audi A4
 
 MSRP: $74.99
Just: $49.99 Each

Audi A4 2006-2007 3.2l V6 F/I K&N Replacement Air Filter

Audi A4 2006-2007  3.2l V6 F/I  K&N Replacement Air Filter
33-2209
K&N Air Filter Fits 2006 2007 Audi A4
 
 MSRP: $73.49
Just: $48.99 Each

Audi A4 2008-2009 3.0l V6 Dsl K&N Replacement Air Filter

Audi A4 2008-2009  3.0l V6 Dsl  K&N Replacement Air Filter
E-1987
K&N Air Filter Fits 2008 2009 Audi A4
 
 MSRP: $85.49
Just: $56.99 Each

Audi A4 2009-2009 2.0l L4 F/I Cabriolet K&N Replacement Air Filter

Audi A4 2009-2009  2.0l L4 F/I Cabriolet K&N Replacement Air Filter
33-2209
K&N Air Filter Fits 2009 Audi A4
 
 MSRP: $73.49
Just: $48.99 Each

Audi A4 2009-2009 2.0l L4 F/I Exc. Cabriolet K&N Replacement Air Filter

Audi A4 2009-2009  2.0l L4 F/I Exc. Cabriolet K&N Replacement Air Filter
33-2945
K&N Air Filter Fits 2009 Audi A4
 
 MSRP: $74.99
Just: $49.99 Each

Audi A4 2007-2007 1.8l L4 F/I Exc., 163bhp K&N Replacement Air Filter

Audi A4 2007-2007  1.8l L4 F/I Exc., 163bhp K&N Replacement Air Filter
33-2945
K&N Air Filter Fits 2007 Audi A4
 
 MSRP: $74.99
Just: $49.99 Each

Audi A4 1997-2001 1.8l L4 F/I K&N Replacement Air Filter

Audi A4 1997-2001  1.8l L4 F/I  K&N Replacement Air Filter
33-2125
K&N Air Filter Fits 1997 1998 1999 2000 2001 Audi A4
 
 MSRP: $73.49
Just: $48.99 Each

Audi A4 2002-2006 1.8l L4 F/I K&N Replacement Air Filter

Audi A4 2002-2006  1.8l L4 F/I  K&N Replacement Air Filter
33-2209
K&N Air Filter Fits 2002 2003 2004 2005 2006 Audi A4
 
 MSRP: $73.49
Just: $48.99 Each

Audi A4 2009-2009 Quattro 3.2l V6 F/I Cabriolet K&N Replacement Air Filter

Audi A4 2009-2009  Quattro 3.2l V6 F/I Cabriolet K&N Replacement Air Filter
33-2209
K&N Air Filter Fits 2009 Audi A4
 
 MSRP: $73.49
Just: $48.99 Each

Audi A4 2000-2001 2.5l V6 Dsl 155/163/180bhp K&N Replacement Air Filter

Audi A4 2000-2001  2.5l V6 Dsl 155/163/180bhp K&N Replacement Air Filter
33-2209
K&N Air Filter Fits 2000 2001 Audi A4
 
 MSRP: $73.49
Just: $48.99 Each

Audi A4 2000-2004 2.0l L4 F/I K&N Replacement Air Filter

Audi A4 2000-2004  2.0l L4 F/I  K&N Replacement Air Filter
33-2209
K&N Air Filter Fits 2000 2001 2002 2003 2004 Audi A4
 
 MSRP: $73.49
Just: $48.99 Each

Audi A4 1996-2001 2.8l V6 F/I K&N Replacement Air Filter

Audi A4 1996-2001  2.8l V6 F/I  K&N Replacement Air Filter
33-2125
K&N Air Filter Fits 1996 1997 1998 1999 2000 2001 Audi A4
 
 MSRP: $73.49
Just: $48.99 Each

Audi A4 1994-2001 1.8l L4 F/I K&N Replacement Air Filter

Audi A4 1994-2001  1.8l L4 F/I  K&N Replacement Air Filter
33-2125
K&N Air Filter Fits 1994 1995 1996 1997 1998 1999 2000 2001 Audi A4
 
 MSRP: $73.49
Just: $48.99 Each

Audi A4 2008-2009 2.7l V6 Dsl K&N Replacement Air Filter

Audi A4 2008-2009  2.7l V6 Dsl  K&N Replacement Air Filter
E-1987
K&N Air Filter Fits 2008 2009 Audi A4
 
 MSRP: $85.49
Just: $56.99 Each

Audi A4 1997-2001 2.4l V6 F/I K&N Replacement Air Filter

Audi A4 1997-2001  2.4l V6 F/I  K&N Replacement Air Filter
33-2125
K&N Air Filter Fits 1997 1998 1999 2000 2001 Audi A4
 
 MSRP: $73.49
Just: $48.99 Each
Looking for More? Select your Year

Questions and Answers about K&N Air Filters

Q: Does the K&N air filter fit into my air cleaner housing just like a factory air filter?

A: Yes a K&N air filter is designed to the exact dimensions of a factory air filter.

Q: Do you really get a performance increase from a K&N air filter?

A: Yes. K&N has Dyno proven results that back up all increased horsepower claims they make. On average you will gain 2-5 horsepower just by changing your air filter to a K&N.

Q: I have also read that a K&N air filter will increase fuel mileage in my vehicle. Is this true?

A: Yes. With less air intake restriction your vehicle will not have to work as hard to get air into the engine. This is why you get better MPG from a K&N air filter.

Q: Does K&N really stand behind the million mile guarantee on filters?

A: Yes. K&N will replace your air filter anytime it fails within 1 million miles. Chances are you will never have the same car for 1 million miles but if you do K&N will stand behind it.

Q: Do I need to clean a K&N air filter?

A: Yes K&N offers a cleaning kit that should be used every 15000-30000 miles of use. This will keep your filter performing like new.

 
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