Ford Focus IV Replacement Air Filters

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

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

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

  1. K&N Extended Life 24,000 Mile Engine Air Filter - FORD FOCUS IV L3-1.0L F/I
  2. 2021 Ford Focus IV 2.0L L4 Diesel air filter
    Special Price €69.69 Regular Price €92.99
    33-3131
    K&N
  3. K&N Extended Life 24,000 Mile Engine Air Filter - FORD FOCUS IV L3-1.0L F/I
  4. 2021 Ford Focus IV 1.5L L4 Gas air filter
    Special Price €69.69 Regular Price €92.99
    33-3131
    K&N
  5. K&N Extended Life 24,000 Mile Engine Air Filter - FORD FOCUS IV L3-1.0L F/I
  6. 2021 Ford Focus IV 1.0L L3 Gas air filter
    Special Price €69.69 Regular Price €92.99
    33-3131
    K&N
  7. 2020 Ford Focus IV 1.5L L4 Diesel air filter
    Special Price €69.69 Regular Price €92.99
    33-3131
    K&N
  8. K&N Extended Life 24,000 Mile Engine Air Filter - FORD FOCUS IV L3-1.0L F/I
  9. 2020 Ford Focus IV 1.0L L3 Gas air filter
    Special Price €69.69 Regular Price €92.99
    33-3131
    K&N
  10. K&N Extended Life 24,000 Mile Engine Air Filter - FORD FOCUS IV L3-1.0L F/I
  11. 2020 Ford Focus IV 2.0L L4 Diesel air filter
    Special Price €69.69 Regular Price €92.99
    33-3131
    K&N
  12. K&N Extended Life 24,000 Mile Engine Air Filter - FORD FOCUS IV L3-1.0L F/I
  13. K&N Extended Life 24,000 Mile Engine Air Filter - FORD FOCUS IV L3-1.0L F/I
  14. 2019 Ford Focus IV 2.0L L4 Diesel air filter
    Special Price €69.69 Regular Price €92.99
    33-3131
    K&N
  15. K&N Extended Life 24,000 Mile Engine Air Filter - FORD FOCUS IV L3-1.0L F/I
  16. 2019 Ford Focus IV 1.5L L3 Gas air filter
    Special Price €69.69 Regular Price €92.99
    33-3131
    K&N
  17. K&N Extended Life 24,000 Mile Engine Air Filter - FORD FOCUS IV L3-1.0L F/I
  18. 2019 Ford Focus IV 1.0L L3 Gas air filter
    Special Price €69.69 Regular Price €92.99
    33-3131
    K&N
  19. 2018 Ford Focus IV 1.0L L3 Gas air filter
    Special Price €69.69 Regular Price €92.99
    33-3131
    K&N
  20. K&N Extended Life 24,000 Mile Engine Air Filter - FORD FOCUS IV L3-1.0L F/I
  21. 2018 Ford Focus IV 2.0L L4 Diesel air filter
    Special Price €69.69 Regular Price €92.99
    33-3131
    K&N
  22. K&N Extended Life 24,000 Mile Engine Air Filter - FORD FOCUS IV L3-1.0L F/I
  23. 2018 Ford Focus IV 1.5L L3 Gas air filter
    Special Price €69.69 Regular Price €92.99
    33-3131
    K&N
  24. K&N Extended Life 24,000 Mile Engine Air Filter - FORD FOCUS IV L3-1.0L F/I
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