Top 9 Focus ST Air Filter – Automotive Replacement Air Intake Filters

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1. Yates Performance

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ROUSH 422065 2013-2018 Focus ST and RS 2.0 Liter Cold Air Intake System

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Yates Performance #ad - Fits 2013-2018 focus st and 2016-2018 Focus RS. Now carb approved for use in California; EO# D-418-30 High-flow 3" induction Tube with OE Quality Fit and Finish. Installation is quick and simple, installing in less than one hour with basic tool. Includes premium high-flow air filter that is re-usable simply by washing and oiling.
BrandYates Performance #ad
ManufacturerRoush #ad
Height11 Inches
Length41 Inches
Weight12.25 Pounds
Width10 Inches
Part Number422065

2. R&L Racing

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AF Dynamic Red AF Daynamic Cold Air Filter Intake Kit Compatible For 2013-2016 Focus ST 2.0L 2.0 Turbo

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R&L Racing #ad - Brand new! application AF Dynamic. Increases of 5 to 10 horsepower, 6 to 8 Percent of Torque, And Improved Gas Mileage of Your Vehicle. Function: helps engine to more efficiently draw in colder air, resulting in better throttle response and consistently Higher Horsepower Output.

Material: replaces oem filter and air box with 100% new quality parts. Improves up to 95% filtration Efficiency Over OEM Paper Filters. Works with original Equipment Manufacturer Computer Systems. Installation & warranty: professional installation Is Highly Recommended. 60 days Factory Warranty. Intense Deep Sporty Sound. Uses only top-quality stainless steel button head bolts, Washers, Locknuts and Band Clamps and High Quality Silicone Coupler, Elbow and Hoses “Not Cheap Rubber”. Color: Red.
BrandR&L Racing #ad
ManufacturerR&L Racing #ad
Weight10 Pounds
Part Number1314-FF-HS-R

3. aFe Power

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AFe Power 10-10133 Performance Replacement Air Filter for 12-18 Ford Focus RS/ST, Oiled Media, Washable

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aFe Power #ad - Washable and reusable for multiple Cleaning Cycles. Flow increase - up to 19% Increase in Flow Over the Factory Air Filter. Durable 100% polyurethane top and Base for Extra-Long Filter Life. Manufactured in the usa and backed by aFe’s Lifetime Warranty. Maximum performance pro 5r filter media features five Layers of Progressive Finer Oiled Cotton Gauze for Maximum Performance.
BrandaFe Power #ad
ManufactureraFe Power #ad
Height0 Inches
Length0 Inches
Width0 Inches
Part Number10-10133
Model10-10133
WarrantyLife of the Vehicle

4. Mishimoto

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Mishimoto MMAI-FOST-13P Performance Air Intake Compatible With Ford Focus ST 2013-2018 Silver

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Mishimoto #ad - Designed to work with stock tune with no additional tuning required. Dyno-proven maximum gains of up to 6 whp and 5 wtq on the stock tune. Air filter placed to receive maximum airflow from the front of the vehicle. Direct fit for 2013+ Ford Focus ST. Mishimoto Lifetime Warranty.
BrandMishimoto #ad
ManufacturerMishimoto #ad
Height10 Inches
Length24 Inches
Weight10 Pounds
Width18 Inches
Part NumberMMAI-FOST-13P
ModelMMAI-FOST-13P
WarrantyLifetime Warranty

5. Airaid

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Superior Filtration: Compatible with 2013-2018 FORD Focus, Focus STAIR-452-181, Airaid Cold Air Intake System: Increased Horsepower

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Airaid #ad - Easy to clean oil-free synthetic air filter. Replaces stock air box and air filter. Increases horsepower and torque. Cold air dam panels block out hot engine bay air. Fit type: Vehicle Specific. Easy to install using commonly available tools.
BrandAiraid #ad
ManufacturerAiraid #ad
Height10 Inches
Length14 Inches
Weight4.9 Pounds
Width12 Inches
Part Number452-181
Model452-181
WarrantyLifetime

6. Motorcraft

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Motorcraft FA-1908 Air Filter

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Motorcraft #ad - Package weight : 14. 4 ounces. Package dimensions: 15. 75 l x 23. 37 h x 16. 26 w centimeters. Country of Origin : United States. Fit type: Vehicle Specific.
BrandMotorcraft #ad
ManufacturerMotorcraft #ad
Height9.28 Inches
Length6.66 Inches
Weight0.9 Pounds
Width6.66 Inches
Part NumberFA-1908
ModelFA-1908
WarrantyAll Motorcraft and Ford Parts are covered by Ford's 24-month/Unlimited Mileage Limited Warranty

7. K&N

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C30, Replacement Filter: Compatible with 2007-2019 Ford/Lincoln/Volvo C-Max, Focus, Washable, K&N Engine Air Filter: High Performance, V40, Tourneo, Escape, MKC, V70, Kuga, S40 E-2993, Grand C-Max

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K&N #ad - World class protection: Pushing the limits of engine protection by protecting your engine from harmful contaminants. Saves money: k&n high-flow replacement air filters will save you $250 over 10 years by avoiding disposable filters.

Eco-friendly: using a washable, reusable product helps reduce replacement waste. Easy installation: pre-oiled and ready to drop into your factory air box. Engineered power: state-of-the-art filtration media provides up to 50% more airflow than disposable paper filters to increase power and acceleration. Race tested: the official air filter of NASCAR. A k&n filter will last longer than 10 disposable filters.

High quality: Made in America. One of the easiest and most cost-effective upgrades for your vehicle for quick performance gains. Clogged or dirty air filters can reduce your vehicle’s acceleration by up to 10%. Low-maintenance design: 50, 000 miles before your first cleaning under normal highway driving conditions. Trusted on the racetrack—made for your vehicle.
BrandK&N #ad
ManufacturerK&N Engineering #ad
Height7.68 Inches
Length6.3 Inches
Weight1.35 Pounds
Width6.3 Inches
Part NumberE-2993
ModelE-2993
WarrantyLIMITED WARRANTY

8. AEM

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AEM AE-20993 Dryflow Air Filter

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AEM #ad - Outstanding performance even in dusty racing conditions. Manufactured in the USA. Designed to increase horsepower and throttle response. Captures up to 99 percentage of harmful contaminants. Aem air filters are cleanable and guaranteed for the life of your vehicle.
BrandAEM #ad
ManufacturerAEM #ad
Height10.2 Inches
Length6.3 Inches
Weight1.2 Pounds
Width6.3 Inches
Part NumberAE-20993
ModelAEM-AE-20993
WarrantyLimited Lifetime

9. K&N

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Heavy Duty: E-9289, Washable, Industrial Replacement Filter, K&N Engine Air Filter: High Performance, Premium

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K&N #ad - One of the easiest and most cost-effective upgrades for your vehicle for quick performance gains. Designed to boost horsepower and rate of acceleration. Can be cleaned and used again. Clogged or dirty air filters can reduce your vehicle's acceleration by up to 10%.

Eco-friendly: using a washable, reusable product helps reduce replacement waste. World class protection: pushing the limits of engine protection by protecting your engine from harmful contaminants. Low-maintenance design: 50, 000 miles before your first cleaning under normal highway driving conditions. High quality: Made in America. Race tested: the official Air Filter of NASCAR. Engineered power: state-of-the-art filtration media provides up to 50% more airflow than disposable paper filters to increase power and acceleration.

Saves money: k&n high-flow replacement air filters will save you $250 over 10 years by avoiding disposable filters. Works with original equipment manufacturer vehicle electronics. A k&n filter will last longer than 10 disposable filters. High air flow with exceptional filtration. Trusted on the racetrack—made for your vehicle. Lasts up to 50, 000 miles before cleaning is required depending on driving conditions.
BrandK&N #ad
ManufacturerK&N Engineering #ad
Height9 Inches
Length7.25 Inches
Weight1.1 Pounds
Width7.25 Inches
Part NumberE-9289
ModelE-9289
Warranty1,000,000 Miles