Ford Focus RS Replacement Air Filters

Buy now from K&N's Online Store and get a 100% money back guarantee on any Ford Focus RS air filter!

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

Order your K&N replacement air filter Factory Direct today! Help your Ford Focus RS run better. Fast and FREE SHIPPING with any Ford Focus RS air filter

  1. 2018 Ford Focus RS 2.3L L4 Gas air filter
    Special Price RSD 7,251.13 Regular Price RSD 9,668.17
    E-2993
    K&N
  2. K&N Extended Life 24,000 Mile Engine Air Filter - FORD C-MAX L4-1.6L F/I
  3. 2017 Ford Focus RS 2.3L L4 Gas air filter
    Special Price RSD 7,251.13 Regular Price RSD 9,668.17
    E-2993
    K&N
  4. K&N Extended Life 24,000 Mile Engine Air Filter - FORD C-MAX L4-1.6L F/I
  5. 2016 Ford Focus RS 2.3L L4 Gas air filter
    Special Price RSD 7,251.13 Regular Price RSD 9,668.17
    E-2993
    K&N
  6. K&N Extended Life 24,000 Mile Engine Air Filter - FORD C-MAX L4-1.6L F/I
  7. 2015 Ford Focus RS 2.3L L4 Gas air filter
    Special Price RSD 7,251.13 Regular Price RSD 9,668.17
    E-2993
    K&N
  8. K&N Extended Life 24,000 Mile Engine Air Filter - FORD C-MAX L4-1.6L F/I
  9. 2004 Ford Focus RS 2.0L L4 Gas air filter
    Special Price RSD 6,525.78 Regular Price RSD 8,700.65
    33-2266
    K&N
  10. 2003 Ford Focus RS 2.0L L4 Gas air filter
    Special Price RSD 6,525.78 Regular Price RSD 8,700.65
    33-2266
    K&N
  11. 2002 Ford Focus RS 2.0L L4 Gas air filter
    Special Price RSD 6,525.78 Regular Price RSD 8,700.65
    33-2266
    K&N
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