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Subaru Impreza WRX STi Replacement Air Filters

Buy now from K&N's Online Store and get a 100% money back guarantee on any Subaru Impreza WRX STi air filter!

  • Designed to Increase Horsepower and Acceleration
  • High Air Flow with Excellent Filtration
  • Top Performance Accessory for Subaru Impreza WRX STi Models
  • K&N Million Mile Limited Warranty®

Order your K&N replacement air filter Factory Direct today! Help your Subaru Impreza WRX STi run better. Fast and FREE SHIPPING with any Subaru Impreza WRX STi air filter

  1. K&N Long Life 18,000 Mile Engine Air Filter - SUBARU OUTBACK/LEG/ IMPREZA/ FORESTER
  2. K&N Extended Life 24,000 Mile Engine Air Filter - SUBARU OUTBACK/ LEG/ IMPREZA/ FORESTER
  3. 2014 Subaru Impreza WRX STi 2.5L H4 Gas air filter
    Special Price €66.39 Regular Price €88.49
    33-2304
    K&N
  4. K&N Extended Life 24,000 Mile Engine Air Filter - SUBARU OUTBACK/ LEG/ IMPREZA/ FORESTER
  5. K&N Long Life 18,000 Mile Engine Air Filter - SUBARU OUTBACK/LEG/ IMPREZA/ FORESTER
  6. 2013 Subaru Impreza WRX STi 2.5L H4 Gas air filter
    Special Price €66.39 Regular Price €88.49
    33-2304
    K&N
  7. K&N Extended Life 24,000 Mile Engine Air Filter - SUBARU OUTBACK/ LEG/ IMPREZA/ FORESTER
  8. K&N Long Life 18,000 Mile Engine Air Filter - SUBARU OUTBACK/LEG/ IMPREZA/ FORESTER
  9. 2012 Subaru Impreza WRX STi 2.5L H4 Gas air filter
    Special Price €66.39 Regular Price €88.49
    33-2304
    K&N
  10. K&N Extended Life 24,000 Mile Engine Air Filter - SUBARU OUTBACK/ LEG/ IMPREZA/ FORESTER
  11. K&N Long Life 18,000 Mile Engine Air Filter - SUBARU OUTBACK/LEG/ IMPREZA/ FORESTER
  12. 2011 Subaru Impreza WRX STi 2.5L H4 Gas air filter
    Special Price €66.39 Regular Price €88.49
    33-2304
    K&N
  13. K&N Long Life 18,000 Mile Engine Air Filter - SUBARU OUTBACK/LEG/ IMPREZA/ FORESTER
  14. K&N Extended Life 24,000 Mile Engine Air Filter - SUBARU OUTBACK/ LEG/ IMPREZA/ FORESTER
  15. 2010 Subaru Impreza WRX STi 2.5L H4 Gas air filter
    Special Price €66.39 Regular Price €88.49
    33-2304
    K&N
  16. K&N Long Life 18,000 Mile Engine Air Filter - SUBARU OUTBACK/LEG/ IMPREZA/ FORESTER
  17. K&N Extended Life 24,000 Mile Engine Air Filter - SUBARU OUTBACK/ LEG/ IMPREZA/ FORESTER
  18. 2009 Subaru Impreza WRX STi 2.0L H4 Gas air filter
    Special Price €66.39 Regular Price €88.49
    33-2304
    K&N
  19. K&N Extended Life 24,000 Mile Engine Air Filter - SUBARU OUTBACK/ LEG/ IMPREZA/ FORESTER
  20. K&N Long Life 18,000 Mile Engine Air Filter - SUBARU OUTBACK/LEG/ IMPREZA/ FORESTER
  21. 2009 Subaru Impreza WRX STi 2.5L H4 Gas air filter
    Special Price €66.39 Regular Price €88.49
    33-2304
    K&N
  22. K&N Long Life 18,000 Mile Engine Air Filter - SUBARU OUTBACK/LEG/ IMPREZA/ FORESTER
  23. K&N Extended Life 24,000 Mile Engine Air Filter - SUBARU OUTBACK/ LEG/ IMPREZA/ FORESTER
  24. 2008 Subaru Impreza WRX STi 2.5L H4 Gas air filter
    Special Price €66.39 Regular Price €88.49
    33-2304
    K&N
  25. 2007 Subaru Impreza WRX STi 2.5L H4 Gas air filter
    Special Price €66.39 Regular Price €88.49
    33-2232
    K&N
  26. 2006 Subaru Impreza WRX STi 2.5L H4 Gas air filter
    Special Price €66.39 Regular Price €88.49
    33-2232
    K&N
  27. 2005 Subaru Impreza WRX STi 2.5L H4 Gas air filter
    Special Price €66.39 Regular Price €88.49
    33-2232
    K&N
  28. 2004 Subaru Impreza WRX STi 2.5L H4 Gas air filter
    Special Price €51.59 Regular Price €68.79
    33-2075
    K&N
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