Ford Focus ST IV Replacement Air Filters

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

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

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

  1. 2021 Ford Focus ST IV 2.3L L4 Petrol air filter
    Special Price £48.69 Regular Price £64.99
    33-3131
    K&N
  2. 2021 Ford Focus ST IV 2.0L L4 Diesel air filter
    Special Price £48.69 Regular Price £64.99
    33-3131
    K&N
  3. 2020 Ford Focus ST IV 2.3L L4 Petrol air filter
    Special Price £48.69 Regular Price £64.99
    33-3131
    K&N
  4. 2020 Ford Focus ST IV 2.0L L4 Diesel air filter
    Special Price £48.69 Regular Price £64.99
    33-3131
    K&N
Search By Vehicle
Find Parts for your vehicle
*
Search By Dimension
The item you added to cart DOES NOT FIT your
This item fits your

The item(s) below fits your vehicle