Cobb 13+ Ford Focus ST Air Filter-COBB-COBB791101
Click to zoom in

Cobb 13+ Ford Focus ST Air Filter

COBB
COBB791101
799928867900
Air Filters - Drop In
20+ Units In Stock - Ships Next Business Day
$ 80.00
$ 80.00

SKU: B791101   |   UPC: 799928867900

Cobb 2013-2018 Ford Focus ST SF Air Filter

The Cobb SF Air Filter is a direct-replacement performance filter for the 2013-2018 Ford Focus ST 2.0L EcoBoost. It installs in minutes without modifications and replaces the factory filter (CV6Z-9601-B). Drivers gain noticeable airflow increases for sharper throttle response and added horsepower on stock or tuned engines.

Key Features

  • High-Flow Media: Proprietary oiled multi-layer cotton gauze flows 59.2% more air than stock at 3,000 CFM for improved engine breathing.
  • Drop-In Fit: Precision-shaped to match OEM housing, ensuring seamless installation and secure seal on 2013-2018 Focus ST.
  • Reusable Design: Washable and re-oilable with Cobb filter service kit for repeated use and cost savings over disposables.
  • Performance Gains: Dyno-tested to deliver quicker acceleration and efficiency without ECU changes.
  • Durable Construction: High-quality rubber flanges and wire mesh support resist tearing for long-term reliability.

Product Notes

  • Requires Cobb SF Filter Oil and Cleaner for maintenance every 15,000-30,000 miles.
  • Inspect regularly in dusty conditions to maintain peak performance.

Installation Notes

  • Professional installation recommended.
  • Remove factory airbox cover and old filter drop in new filter and reassemble in under 10 minutes.
  • No additional hardware or clips required compatible with stock intake and Cobb SF Intake System.

This Part Fits

Year Make Model Submodel
2013-2018 Ford Focus ST

Why Choose Cobb?

  • Proven leader in Ford EcoBoost tuning with thousands of real-world applications.
  • Components built to withstand track and street demands.
  • Engineered and tested in-house for exact Focus ST compatibility.

Frequently Asked Questions

  • Q: Will this fit my 2016 Ford Focus ST?
    A: Yes, it fits all 2013-2018 Ford Focus ST models with the 2.0L EcoBoost engine as a direct OEM replacement.
  • Q: What is the filter made of?
    A: Oiled multi-layer cotton gauze with reinforced wire mesh and premium rubber edging for durability and airflow.
  • Q: What is the warranty?
    A: Lifetime warranty on filter media when maintained properly with Cobb service products.

Shipping & Handling

  • Method: UPS Ground or USPS Priority
  • Availability: In stock - ships same or next business day
  • Packaging: Custom protective box, 11.5 x 8.5 x 3.5 inches
  • Weight: 1.1 lbs

Request For Information

Have questions about Cobb 13+ Ford Focus ST Air Filter? Fill out the form below and we'll get back to you by the next business day.
Air Filters

Air Filters

Air filters and intake filtration parts for cars, trucks, SUVs, Jeeps, and diesel platforms are stocked at Black Ops Auto Works. Shop direct-fit filters, drop-in replacement filters, universal clamp-on filters, cabin air filters, HVAC filters, engine breather filters, pre-filters, and velocity stacks for Hellcat, Trackhawk, TRX, Grand Cherokee, Challenger, Charger, Camaro, Corvette, Mustang, F-150, Tacoma, Tundra, BMW, and Honda platforms. Every product is filterable by year, make, model, trim, engine, and filter dimension so the correct part ships the first time. Black Ops Auto Works carries 3,397 air filter SKUs across direct-fit, universal, cabin, and pre-filter categories. What This Collection Covers Air filters remove dirt, dust, and debris from air entering the engine or cabin. This collection spans OE-style direct-fit and drop-in filters, universal cone and clamp-on filters for custom intakes, cabin and HVAC filters for interior air, engine breather filters for crankcase ...

View Air Filters Products
Air Filters - Drop In

Air Filters - Drop In

Drop in air filters and replacement panel filters for cars, trucks, SUVs, and Jeeps are stocked at Black Ops Auto Works. Shop reusable and dry media panel filters that fit directly into your factory air box from K&N, aFe, AEM, Injen, BMC, and GReddy for vehicles ranging from Corvette and Mustang to Porsche, BMW, and Ford Super Duty diesel trucks. Every product is filterable by year, make, model, trim, engine, and drivetrain so the correct filter ships the first time. Black Ops Auto Works carries 1,453 drop in air filter SKUs across dozens of vehicle platforms. What This Category Covers Drop in air filters replace the factory paper filter element inside your existing air box without changing the intake tubing or housing. This collection spans reusable oiled cotton filters, dry synthetic media filters, and OEM style replacement panels sized to fit factory air box dimensions across nearly every make and model. Reusable and Dry Media Options Reusable oiled cotton filters from K&...

View Air Filters - Drop In Products
COBB

COBB

COBB Tuning parts for turbocharged performance platforms are stocked at Black Ops Auto Works. Shop the Accessport ECU programmer, cold air intakes, cat back exhaust systems, and supporting hardware engineered for Subaru WRX and STI, Ford Focus ST and RS, Ford F-150 EcoBoost, Mazdaspeed3 and 6, Nissan GT-R, Porsche, BMW, and Volkswagen platforms. Every product is filterable by year, make, model, and trim so the correct part ships the first time. Black Ops Auto Works carries 372 COBB SKUs across tuning, intake, and exhaust categories. What This Brand Covers COBB Tuning built its reputation on the Accessport, one of the most widely used ECU flash tools in the aftermarket, and has expanded into intakes, exhausts, downpipes, and supporting hardware for a range of turbocharged platforms. The catalog centers on a defined group of import and Euro performance vehicles rather than a single brand family. Brand Focus COBB Tuning parts are engineered primarily for Subaru, Ford, Mazda, Nissan...

View COBB Products
Military & First Responder Discounts

Military & First Responder Discount Program

Black Ops Auto Works proudly honors active duty military, veterans, National Guard, reserves, police officers, firefighters, and EMTs with an exclusive 5% discount on all performance parts and carbon fiber upgrades. Verify instantly and start saving today.

Learn More & Apply

Your cart

×