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. 2014 Subaru Impreza WRX STi 2.5L H4 Gas air filter
    $64.99 Regular Price $58.49 Special Price
    33-2304
    K&N
  2. 2013 Subaru Impreza WRX STi 2.5L H4 Gas air filter
    $64.99 Regular Price $58.49 Special Price
    33-2304
    K&N
  3. 2012 Subaru Impreza WRX STi 2.5L H4 Gas air filter
    $64.99 Regular Price $58.49 Special Price
    33-2304
    K&N
  4. 2011 Subaru Impreza WRX STi 2.5L H4 Gas air filter
    $64.99 Regular Price $58.49 Special Price
    33-2304
    K&N
  5. 2010 Subaru Impreza WRX STi 2.5L H4 Gas air filter
    $64.99 Regular Price $58.49 Special Price
    33-2304
    K&N
  6. 2009 Subaru Impreza WRX STi 2.5L H4 Gas air filter
    $64.99 Regular Price $58.49 Special Price
    33-2304
    K&N
  7. 2009 Subaru Impreza WRX STi 2.0L H4 Gas air filter
    $64.99 Regular Price $58.49 Special Price
    33-2304
    K&N
  8. 2008 Subaru Impreza WRX STi 2.5L H4 Gas air filter
    $64.99 Regular Price $58.49 Special Price
    33-2304
    K&N
  9. 2007 Subaru Impreza WRX STi 2.5L H4 Gas air filter
    $64.99 Regular Price $58.49 Special Price
    33-2232
    K&N
  10. 2006 Subaru Impreza WRX STi 2.5L H4 Gas air filter
    $64.99 Regular Price $58.49 Special Price
    33-2232
    K&N
  11. 2005 Subaru Impreza WRX STi 2.5L H4 Gas air filter
    $64.99 Regular Price $58.49 Special Price
    33-2232
    K&N
  12. 2004 Subaru Impreza WRX STi 2.5L H4 Gas air filter
    $54.99 Regular Price $49.49 Special Price
    33-2075
    K&N
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