COBB Air Filter Replacement High Flow Focus ST 2013-2018/Focus RS 2016-2018

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  • High Flow Filter
  • Easy Installation
  • Pre-Oiled
  • Cotton Woven Media

COBB High Flow Air Filter Replacement for all 2013, 2014, 2015, 2016, 2017 and 2018 Focus STs and the 2016-2018 Focus RS.

Are you in the market for a quick and easy modification that will truly help unlock the hidden potential in your 2013-2018 Focus ST or 2016-2018 Focus RS? If so, look no further than this High Flow Air Filter Replacement (P/N: 791101) from COBB.

This COBB High Flow Filter is designed to permit a very high flow rates. The simple installation will help with minimizing restriction in the intake path. COBB has found a way to maximize filtration all while providing a long life washable and reusable filter. It uses a proprietary pre-oiled woven cotton and metal mesh with a precision molded rubber base and a dual cone design that will drop right into your factory airbox. COBB has also designed this filter to be fully compatible with their Accessport V3 Off-The-Shelf (OTS) Maps.

Features and Benefits:
- Washable and Reusable Cotton Woven Media
- Precision Molded for Direct Drop In to the Factory Air Box
- Increased Air Flow While Maintaining Filtering Efficiency
- Pre-Oiled with a Dual Cone Design
- Compatible with COBB Accessport V3 OTS Maps

Upgrade the performance and driving experience of your Ford Focus ST or Focus RS with some help from COBB Tuning! COBB has over 15 years of experience in developing performance upgrades for many different performance cars, with thousands of happy customers worldwide. With tuners, shifters, exhausts and more, you can give your EcoBoost Ford a big boost with some help from COBB Tuning.

Order this COBB (791101) High Flow Air Filter Replacement for your 2013, 2014, 2015, 2016, 2017 or 2018 Focus ST or 2016-2018 Focus RS from CJ Pony Parts today!

California Residents: Proposition 65 Warning

Installation Videos

Video Transcript

We’re here with a COBB high flow replacement air filter fitting your 2013 and 2016 Focus ST and your 2016 Focus RS.

If you're looking for an easy way to improve the performance of your Focus, this COBB air filter is the first thing you should consider doing. This pre-oiled high flow direct replacement air filter easily replaces your factory air filter and perfectly fits your Focus.

It outflows the factory air filter which will improve performance and efficiency in conjunction with the COBB Accessport and its washable and reusable.

This COBB replacement air filter can be found along with other parts for your Focus ST and RS at

Vehicle Fitment

This product will fit the following Focus years:

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