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Audi A4 Quattro Replacement Air Filters

Buy now from K&N's Online Store and get a 100% money back guarantee on any Audi A4 Quattro air filter!

  • Designed to Increase Horsepower and Acceleration
  • High Air Flow with Excellent Filtration
  • Top Performance Accessory for Audi A4 Quattro Models
  • K&N Million Mile Limited Warranty®

Order your K&N replacement air filter Factory Direct today! Help your Audi A4 Quattro run better. Fast and FREE SHIPPING with any Audi A4 Quattro air filter

  1. 2025 Audi A4 Quattro 2.0L L4 Gas air filter
    ISK 14,479.04
    E-0646
    K&N
  2. 2024 Audi A4 Quattro 2.0L L4 Gas air filter
    ISK 14,479.04
    E-0646
    K&N
  3. 2023 Audi A4 Quattro 2.0L L4 Gas air filter
    ISK 14,479.04
    E-0646
    K&N
  4. 2022 Audi A4 Quattro 2.0L L4 Gas air filter
    ISK 14,479.04
    E-0646
    K&N
  5. 2021 Audi A4 Quattro 2.0L L4 Gas air filter
    ISK 14,479.04
    E-0646
    K&N
  6. 2020 Audi A4 Quattro 2.0L L4 Gas air filter
    ISK 14,479.04
    E-0646
    K&N
  7. 2019 Audi A4 Quattro 2.0L L4 Gas air filter
    ISK 14,479.04
    E-0646
    K&N
  8. 2018 Audi A4 Quattro 2.0L L4 Diesel air filter
    ISK 16,288.01
    E-0648
    K&N
  9. 2018 Audi A4 Quattro 2.0L L4 Gas air filter
    ISK 14,479.04
    E-0646
    K&N
  10. 2017 Audi A4 Quattro 2.0L L4 Diesel air filter
    ISK 16,288.01
    E-0648
    K&N
  11. 2017 Audi A4 Quattro 2.0L L4 Gas air filter
    ISK 14,479.04
    E-0646
    K&N
  12. 2016 Audi A4 Quattro 2.0L L4 Diesel air filter
    ISK 16,288.01
    E-0648
    K&N
  13. 2016 Audi A4 Quattro 2.0L L4 Gas air filter
    ISK 7,600.87
    AEM-28-20945
    K&N
  14. 2016 Audi A4 Quattro 2.0L L4 Gas air filter
    ISK 14,479.04
    E-0646
    K&N
  15. 2016 Audi A4 Quattro 2.0L L4 Gas air filter
    ISK 11,341.45
    33-2945
    K&N
  16. 2015 Audi A4 Quattro 2.0L L4 Gas air filter
    ISK 11,341.45
    33-2945
    K&N
  17. 2015 Audi A4 Quattro 3.0L V6 Gas air filter
    ISK 14,479.04
    E-1987
    K&N
  18. 2015 Audi A4 Quattro 2.0L L4 Gas air filter
    ISK 7,600.87
    AEM-28-20945
    K&N
  19. 2015 Audi A4 Quattro 2.0L L4 Diesel air filter
    ISK 16,288.01
    E-0653
    K&N
  20. 2015 Audi A4 Quattro 2.0L L4 Diesel air filter
    ISK 16,288.01
    E-0648
    K&N
  21. 2015 Audi A4 Quattro 2.0L L4 Gas air filter
    ISK 14,479.04
    E-0646
    K&N
  22. 2014 Audi A4 Quattro 3.0L V6 Gas air filter
    ISK 14,479.04
    E-1987
    K&N
  23. 2014 Audi A4 Quattro 2.0L L4 Gas air filter
    ISK 7,600.87
    AEM-28-20945
    K&N
  24. 2014 Audi A4 Quattro 2.0L L4 Gas air filter
    ISK 11,341.45
    33-2945
    K&N
  25. 2013 Audi A4 Quattro 3.0L V6 Gas air filter
    ISK 14,479.04
    E-1987
    K&N
  26. 2013 Audi A4 Quattro 2.0L L4 Gas air filter
    ISK 7,600.87
    AEM-28-20945
    K&N
  27. 2013 Audi A4 Quattro 2.0L L4 Gas air filter
    ISK 11,341.45
    33-2945
    K&N
  28. 2012 Audi A4 Quattro 3.0L V6 Diesel air filter
    ISK 14,479.04
    E-1987
    K&N
  29. 2012 Audi A4 Quattro 2.0L L4 Gas air filter
    ISK 11,341.45
    33-2945
    K&N
  30. 2012 Audi A4 Quattro 2.0L L4 Gas air filter
    ISK 7,600.87
    AEM-28-20945
    K&N
  31. 2011 Audi A4 Quattro 2.0L L4 Gas air filter
    ISK 7,600.87
    AEM-28-20945
    K&N
  32. 2011 Audi A4 Quattro 2.0L L4 Gas air filter
    ISK 11,341.45
    33-2945
    K&N
  33. 2010 Audi A4 Quattro 2.0L L4 Gas air filter
    ISK 7,600.87
    AEM-28-20945
    K&N
  34. 2010 Audi A4 Quattro 2.0L L4 Gas air filter
    ISK 11,341.45
    33-2945
    K&N
  35. 2009 Audi A4 Quattro 3.2L V6 Gas air filter
    ISK 14,479.04
    E-1987
    K&N
  36. 2009 Audi A4 Quattro 2.0L L4 Gas air filter
    ISK 7,600.87
    AEM-28-20945
    K&N
  37. 2009 Audi A4 Quattro 2.0L L4 Gas air filter
    ISK 11,341.45
    33-2945
    K&N
  38. 2008 Audi A4 Quattro 3.2L V6 Gas air filter
    ISK 11,341.45
    33-2209
    K&N
  39. 2008 Audi A4 Quattro 3.2L V6 Gas air filter
    ISK 14,479.04
    E-1987
    K&N
  40. 2008 Audi A4 Quattro 3.2L V6 Gas air filter
    ISK 3,064.59
    KNA-2209
    K&N LONG LIFE 18,000 MILE ENGINE AIR FILTER - AUDI A4/RS4/S4/ SEAT EXEO
  41. 2008 Audi A4 Quattro 2.0L L4 Gas air filter
    ISK 11,341.45
    33-2209
    K&N
  42. 2008 Audi A4 Quattro 2.0L L4 Gas air filter
    ISK 3,064.59
    KNA-2209
    K&N LONG LIFE 18,000 MILE ENGINE AIR FILTER - AUDI A4/RS4/S4/ SEAT EXEO
  43. 2007 Audi A4 Quattro 3.2L V6 Gas air filter
    ISK 3,064.59
    KNA-2209
    K&N LONG LIFE 18,000 MILE ENGINE AIR FILTER - AUDI A4/RS4/S4/ SEAT EXEO
  44. 2007 Audi A4 Quattro 3.2L V6 Gas air filter
    ISK 11,341.45
    33-2209
    K&N
  45. 2007 Audi A4 Quattro 2.0L L4 Gas air filter
    ISK 3,064.59
    KNA-2209
    K&N LONG LIFE 18,000 MILE ENGINE AIR FILTER - AUDI A4/RS4/S4/ SEAT EXEO
  46. 2007 Audi A4 Quattro 2.0L L4 Gas air filter
    ISK 11,341.45
    33-2209
    K&N
  47. 2006 Audi A4 Quattro 3.0L V6 Gas air filter
    ISK 3,064.59
    KNA-2209
    K&N LONG LIFE 18,000 MILE ENGINE AIR FILTER - AUDI A4/RS4/S4/ SEAT EXEO
  48. 2006 Audi A4 Quattro 3.0L V6 Gas air filter
    ISK 11,341.45
    33-2209
    K&N
  49. 2006 Audi A4 Quattro 3.2L V6 Gas air filter
    ISK 3,064.59
    KNA-2209
    K&N LONG LIFE 18,000 MILE ENGINE AIR FILTER - AUDI A4/RS4/S4/ SEAT EXEO
  50. 2006 Audi A4 Quattro 3.2L V6 Gas air filter
    ISK 11,341.45
    33-2209
    K&N
  51. 2006 Audi A4 Quattro 2.0L L4 Gas air filter
    ISK 3,064.59
    KNA-2209
    K&N LONG LIFE 18,000 MILE ENGINE AIR FILTER - AUDI A4/RS4/S4/ SEAT EXEO
  52. 2006 Audi A4 Quattro 2.0L L4 Gas air filter
    ISK 11,341.45
    33-2209
    K&N
  53. 2005 Audi A4 Quattro 1.8L L4 Gas air filter
    ISK 3,064.59
    KNA-2209
    K&N LONG LIFE 18,000 MILE ENGINE AIR FILTER - AUDI A4/RS4/S4/ SEAT EXEO
  54. 2005 Audi A4 Quattro 3.0L V6 Gas air filter
    ISK 11,341.45
    33-2209
    K&N
  55. 2005 Audi A4 Quattro 3.0L V6 Gas air filter
    ISK 3,064.59
    KNA-2209
    K&N LONG LIFE 18,000 MILE ENGINE AIR FILTER - AUDI A4/RS4/S4/ SEAT EXEO
  56. 2005 Audi A4 Quattro 1.8L L4 Gas air filter
    ISK 11,341.45
    33-2209
    K&N
  57. 2005 Audi A4 Quattro 3.2L V6 Gas air filter
    ISK 11,341.45
    33-2209
    K&N
  58. 2005 Audi A4 Quattro 3.2L V6 Gas air filter
    ISK 3,064.59
    KNA-2209
    K&N LONG LIFE 18,000 MILE ENGINE AIR FILTER - AUDI A4/RS4/S4/ SEAT EXEO
  59. 2005 Audi A4 Quattro 2.0L L4 Gas air filter
    ISK 11,341.45
    33-2209
    K&N
  60. 2005 Audi A4 Quattro 2.0L L4 Gas air filter
    ISK 3,064.59
    KNA-2209
    K&N LONG LIFE 18,000 MILE ENGINE AIR FILTER - AUDI A4/RS4/S4/ SEAT EXEO
  61. 2004 Audi A4 Quattro 1.8L L4 Gas air filter
    ISK 11,341.45
    33-2209
    K&N
  62. 2004 Audi A4 Quattro 1.8L L4 Gas air filter
    ISK 3,064.59
    KNA-2209
    K&N LONG LIFE 18,000 MILE ENGINE AIR FILTER - AUDI A4/RS4/S4/ SEAT EXEO
  63. 2004 Audi A4 Quattro 3.0L V6 Gas air filter
    ISK 11,341.45
    33-2209
    K&N
  64. 2004 Audi A4 Quattro 3.0L V6 Gas air filter
    ISK 3,064.59
    KNA-2209
    K&N LONG LIFE 18,000 MILE ENGINE AIR FILTER - AUDI A4/RS4/S4/ SEAT EXEO
  65. 2003 Audi A4 Quattro 1.8L L4 Gas air filter
    ISK 3,064.59
    KNA-2209
    K&N LONG LIFE 18,000 MILE ENGINE AIR FILTER - AUDI A4/RS4/S4/ SEAT EXEO
  66. 2003 Audi A4 Quattro 1.8L L4 Gas air filter
    ISK 11,341.45
    33-2209
    K&N
  67. 2003 Audi A4 Quattro 3.0L V6 Gas air filter
    ISK 11,341.45
    33-2209
    K&N
  68. 2003 Audi A4 Quattro 3.0L V6 Gas air filter
    ISK 3,064.59
    KNA-2209
    K&N LONG LIFE 18,000 MILE ENGINE AIR FILTER - AUDI A4/RS4/S4/ SEAT EXEO
  69. 2002 Audi A4 Quattro 1.8L L4 Gas air filter
    ISK 11,341.45
    33-2209
    K&N
  70. 2002 Audi A4 Quattro 1.8L L4 Gas air filter
    ISK 3,064.59
    KNA-2209
    K&N LONG LIFE 18,000 MILE ENGINE AIR FILTER - AUDI A4/RS4/S4/ SEAT EXEO
  71. 2002 Audi A4 Quattro 3.0L V6 Gas air filter
    ISK 11,341.45
    33-2209
    K&N
  72. 2002 Audi A4 Quattro 3.0L V6 Gas air filter
    ISK 3,064.59
    KNA-2209
    K&N LONG LIFE 18,000 MILE ENGINE AIR FILTER - AUDI A4/RS4/S4/ SEAT EXEO
  73. 2001 Audi A4 Quattro 1.8L L4 Gas air filter
    ISK 3,064.59
    KNA-2125
    K&N LONG LIFE 18,000 MILE ENGINE AIR FILTER - AUDI / SKODA / VW
  74. 2001 Audi A4 Quattro 2.8L V6 Gas air filter
    ISK 11,341.45
    33-2125
    K&N
  75. 2001 Audi A4 Quattro 2.8L V6 Gas air filter
    ISK 3,064.59
    KNA-2125
    K&N LONG LIFE 18,000 MILE ENGINE AIR FILTER - AUDI / SKODA / VW
  76. 2001 Audi A4 Quattro 1.8L L4 Gas air filter
    ISK 11,341.45
    33-2125
    K&N
  77. 2000 Audi A4 Quattro 1.8L L4 Gas air filter
    ISK 11,341.45
    33-2125
    K&N
  78. 2000 Audi A4 Quattro 2.8L V6 Gas air filter
    ISK 3,064.59
    KNA-2125
    K&N LONG LIFE 18,000 MILE ENGINE AIR FILTER - AUDI / SKODA / VW
  79. 2000 Audi A4 Quattro 2.8L V6 Gas air filter
    ISK 11,341.45
    33-2125
    K&N
  80. 2000 Audi A4 Quattro 1.8L L4 Gas air filter
    ISK 3,064.59
    KNA-2125
    K&N LONG LIFE 18,000 MILE ENGINE AIR FILTER - AUDI / SKODA / VW
  81. 1999 Audi A4 Quattro 2.8L V6 Gas air filter
    ISK 3,064.59
    KNA-2125
    K&N LONG LIFE 18,000 MILE ENGINE AIR FILTER - AUDI / SKODA / VW
  82. 1999 Audi A4 Quattro 2.8L V6 Gas air filter
    ISK 11,341.45
    33-2125
    K&N
  83. 1999 Audi A4 Quattro 1.8L L4 Gas air filter
    ISK 11,341.45
    33-2125
    K&N
  84. 1999 Audi A4 Quattro 1.8L L4 Gas air filter
    ISK 3,064.59
    KNA-2125
    K&N LONG LIFE 18,000 MILE ENGINE AIR FILTER - AUDI / SKODA / VW
  85. 1998 Audi A4 Quattro 2.8L V6 Gas air filter
    ISK 11,341.45
    33-2125
    K&N
  86. 1998 Audi A4 Quattro 1.8L L4 Gas air filter
    ISK 3,064.59
    KNA-2125
    K&N LONG LIFE 18,000 MILE ENGINE AIR FILTER - AUDI / SKODA / VW
  87. 1998 Audi A4 Quattro 1.8L L4 Gas air filter
    ISK 11,341.45
    33-2125
    K&N
  88. 1998 Audi A4 Quattro 2.8L V6 Gas air filter
    ISK 3,064.59
    KNA-2125
    K&N LONG LIFE 18,000 MILE ENGINE AIR FILTER - AUDI / SKODA / VW
  89. 1997 Audi A4 Quattro 2.8L V6 Gas air filter
    ISK 3,064.59
    KNA-2125
    K&N LONG LIFE 18,000 MILE ENGINE AIR FILTER - AUDI / SKODA / VW
  90. 1997 Audi A4 Quattro 1.8L L4 Gas air filter
    ISK 11,341.45
    33-2125
    K&N
  91. 1997 Audi A4 Quattro 2.8L V6 Gas air filter
    ISK 11,341.45
    33-2125
    K&N
  92. 1997 Audi A4 Quattro 1.8L L4 Gas air filter
    ISK 3,064.59
    KNA-2125
    K&N LONG LIFE 18,000 MILE ENGINE AIR FILTER - AUDI / SKODA / VW
  93. 1996 Audi A4 Quattro 2.8L V6 Gas air filter
    ISK 11,341.45
    33-2125
    K&N
  94. 1996 Audi A4 Quattro 2.8L V6 Gas air filter
    ISK 3,064.59
    KNA-2125
    K&N LONG LIFE 18,000 MILE ENGINE AIR FILTER - AUDI / SKODA / VW
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