Ford High Flow Filter Focus ST 2013-2018, Focus RS 2016-2018

$ 59.00

Availability: Ships in 24 hours
Product Code: 791101

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Maps Available


COBB High Flow Filters are designed to permit very high flow rates, minimize restriction, maximize filtration and provide a long life filter. It uses proprietary Woven cotton and metal mesh with a precision molded rubber base. NOTE: The included hose clamp is ONLY needed for the Focus ST.


Ford Focus ST Intake filter dual cone 791100

Ford High Flow Filter Focus ST 2013-2018, Focus RS 2016-2018
  • Washable/Reusable Cotton Woven Media
  • Precision Molded for Direct Drop In To The Factory Air Box
  • Increased Air Flow While Maintaining Filtering Efficiency
  • Pre-Oiled, Dual Cone Design
  • Compatible with COBB Accessport OTS Maps

Customer Photos

Ford High Flow Filter Focus ST 2013-2018, Focus RS 2016-2018 is rated 4.7 out of 5 by 64.
Rated 4 out of 5 by from Good filter but . . . The product is high-quality, was shipped promptly and arrived undamaged. As a new customer I was surprised to find out that the filter is suppose to be pre-oiled, and that there is specific maintenance and products required to maintain this type of filter. It wasn't immediately clear when I received the product whether it had been pre oiled at the factory and was ready to install. I spend a lot of time trying to research whether it was or wasn't and what products I would need for cleaning and oiling the filter. As highly regarded experts in your field, I think you could do a better job providing and/or including some type of documentation to help your customers in this regard.
Date published: 2017-03-17
Rated 5 out of 5 by from Focus ST High Flow Filter I bought the filter about a month ago now and I'm happier every day that I did. More noticeable turbo sound from the engine bay and works perfectly with the factory airbox.
Date published: 2014-05-27
Rated 5 out of 5 by from Cobb High Flow Filter What an awesome filter! I put it on my ST, and haven't stopped smiling since I put it on. Install was less then 5min, and it looks and sounds amazing. If you want to hear your turbo spool, and the sound of your DV, you can't go wrong with this filter. Thanks Cobb Tuning!
Date published: 2014-04-23
Rated 5 out of 5 by from Louder and great! This install took two seconds. was a little more diffucult to get in the box with the metal ring as it hits some plastic when sliding on but it just takes some wiggling. I was super confused when people kept saying it was louder since it's in the stock airbox. IT'S BECAUSE the top of the filter on the Cobb is OPEN and the stock filter is CLOSED. There was even a Q&A of someone asking Cobb if the top was open or closed and in their answer below, they act like they don't know what ther person is talking about lol. Well its open...and that's why you can here the turbo noises more. I rec it big time!
Date published: 2016-10-05
Rated 5 out of 5 by from AWESOME I bought this from an autorised Cobb dealer in Canada. The sound is so great. I'm really happy now. Don't think about it,do it ...for this price , it's really a joke!!! I don't think I have more Hp and torque but really felt like I have a race car!!! sorry for my frenchglish guys :S
Date published: 2014-04-25
Rated 5 out of 5 by from Works great I bought this filter along with my accessport and all I can say is what a difference from the stock filter. You can now hear the turbo and waste gate notices from the engine. Charles feels more responsive and alive thanks to the filter and Accessport. Both of these items will take you to Stage 1. I did not get the Cobb engine mount to reduce wheel hop. But I only really see wheel hop in 1st gear under full acceleration, you will definitely get wheel hop.
Date published: 2015-11-07
Rated 5 out of 5 by from Focus RS - Great "bang" for the buck The unique growl and whirring sound projected by the filter is worth the expense alone, whether it increases HP and Torque, or not. The added air flow comes from the increased surface area from the inverted cone which replaces the original filter's closed end cap. The sound is really wicked upon cold starts. Only wished the filter had a sealing foam gasket like original rather than relying on the worm-type hose clamp of the Cobb filter. I will likely replace the filter with another Cobb filter when it's time to perform maintenance rather than clean the filter and risk introducing contaminants or excessive filter oil into the intake tract and MAF sensor or tearing the media with compressed air.
Date published: 2019-01-09
Rated 5 out of 5 by from Worth it. It gave a deeper growl to my ST while idle and the "swoosh" sound is pretty cool. I also gained 1 mpg since it's on. No noticeable increase in power or throttle response, but it's just an air filter... Easy install, great customer service.
Date published: 2014-09-07
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