Air Filters and Intake Systems

We stock a wide range of high flow air filters and intake systems for your MK3 Focus ST.

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COBB Sound Symposer Delete - Ford Focus ST

COBB Tuning

The COBB Sound Symposer Delete kit for the 2013+ Ford Focus ST is a quick and easy solution for not only deleting your sound symposer to allow you to truly hear your car but also adds an easily accessible boost source for future modifications.6061 Aluminum ConstructionBlack Anodized FinishLaser Etched COBB LogoEasily Reversed Back to StockUses Factory HardwareCOBB Installation Guides & Manuals COBB Focus 891100 Installation InstructionsMPN: C-891100

£55.00£45.83 (ex. VAT)
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COBB Ford High Flow Filter - MK3 Focus ST & RS

COBB Tuning

Fits:FOCUS ST 2013-2018FOCUS RS 2016-2018COBB 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.Ford Focus ST Intake filter dual cone 791100Washable/Reusable Cotton Woven MediaPrecision Molded for Direct Drop In To The Factory Air BoxIncreased Air Flow While Maintaining Filtering EfficiencyPre-Oiled, Dual Cone DesignCompatible with COBB Accessport OTS Maps MPN: C-791101**More stock due week starting 14th October**

£65.00£54.17 (ex. VAT)
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Steeda Focus / Mondeo Blue replacement cone filter element

Steeda

This is the same style Cone Filter Element that is included with all of Steeda's Focus and Mondeo Cold Air Intakes. Having a spare filter element allows for zero downtime while cleaning your cold air intake system. Comes pre-oiled in blue. The filter element also comes with a new clamp.Cold Air Intake Fitment:555-3169555-3213555-3214Product BenefitsEasy to cleanHigh flow filterMillion mile warrantySwap in while you clean your existing filterPart:281-0009

£89.00£74.17 (ex. VAT)
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Direnza Ford Focus MK3 RS / ST250 2.3 / 2.0 12-18 – Vortex Air Induction Scoop

Direnza

All Direnza Cold Air Induction Scoops are manufactured in house, ensuring long-lasting performance enhancements. This piece channels air from the large grille opening directly into the factory snorkel feeding the stock airbox.Designed by Direnza engineers, our Cold Air Induction Scoops enhance air flow into the airbox compared with stock arrangements, boosting your Focus ST’s performance.An increased amount of cooler airflow is key in making the most efficient power out of your Focus ST! Pulling in fresh air from the grill of the Focus ST ensures that air entering into the intake system is as close to ambient as possible.An often-overlooked item, our easy-fit intake scoops are recommended for fitment with a closed airbox for maximum benefit and performance.Designed to replace the OE setup, providing up to 50% more air flowEngineered to help improve throttle responseGains in power and torque are noticeable over a larger RPM rangeA straightforward way to give optimum cooling to your airboxClick here to download fitting instructions

£99.99£83.33 (ex. VAT)
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Forge Ford Focus ST250 Replacement Filter

Forge

This is a replacement Pipercross filter that fits the FMINDK4 and FMIND16 intake.These have been created exclusively for Forge by filtration gurus Pipercross and feature the latest multilayer-foam technology.*Please note - the Pipercross filter is excluded from the Forge lifetime warranty*The filter should be installed with a maximum clamp torque pressure of 3nm.  

£107.86£89.88 (ex. VAT)
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Forge Intake Pressure Compensation Valve

Forge

We recommend servicing your valve every 3 years, or 20,000 miles, whichever comes soonerA blow off or recirculation valve (be it piston, diaphragm or OEM) will be activated by vacuum or electricity, and is designed to improve the drivability of your vehicle giving you maximum power when you want it. All types rely on an internal spring in order to maintain a seal so that you have boost pressure when it is needed - If the spring is too weak, you lose power.Previously, when an engine was "chipped" or the boost pressure increased, the tuner would need to fit a stronger spring, carefully matched to the increased boost. More recently, with the introduction of electric valves, a tuner would fit an aftermarket replacement valve driven by pressure with an uprated spring. All these remedies rely on the careful matching of the spring rate to the turbocharger boost. This would need to be done each time there was a software, and in some cases hardware change.For those running switchable software programs, there was no perfect solution and a compromise spring was normally installed, which would often not perform correctly.Forge are pleased to offer a fit and forget solution. No more changing springs, turning adjusters, or fine tuning. This innovation works straight out the box and will work perfectly on a standard engine, a highly tuned engine, and anywhere in between, without the need to change anything! The IPCV (Intake Pressure Compensation Valve) does it all by itself, ensuring that you always get the maximum power and perfect drivability."Ive done a lot of mods to my R57 MCS , from a big turbo to methanol injection .. but nothing has made such a dramatic change to the throttle response & drivability than the IPCV...I strongly urge anyone looking for instantaneous boost from low-high range to purchase this product immediately."In The Box:1 x FMIPCV Valve1 x 2000mm Length of 5mm Vacuum Hose1 x Flat Bracket1 x Bent Bracket1 x 5mm Brass T Piece1 x 6mm Brass T Piece1 x 6mm Brass Joiner1 x M6 Penny Washer1 x M8 Penny Washer3 x Alternative Vacuum Ports2 x M4 x 6 Socket Cap Screws1 x Instructions1 x Forge StickerForge Motorsport's Intake Pressure Compensation Valve (IPCV) an idea so ingenious, that we have patented it!Please note that the FMIPCV valve is a universal part and model specific instructions are not available. Installation typically requires above average DIY skills, or fitment by a suitably qualified mechanic.Enquire by email if you would like the pressure compensation valve fitted at the Forge Motorsport branch in Gloucester.

£127.66£106.38 (ex. VAT)
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Steeda Focus ST cold air inlet tube upgrade

Steeda

After you free up the majority of the turbo air intake restriction with our Steeda Cold Air intake for your MK3 Ford Focus ST, you can finish the intake system off and gain up to 5 more horsepower over the 10 to 12 horsepower the cold air kit already provides with our Steeda Focus ST Cold Air Inlet Tube Intake for 2013-2014 Ford Focus ST or the 2015+ Facelift Focus ST .Manufactured from high-quality aluminum material, this Steeda 2.0L Ecoboost Cold Air Inlet Tube Intake directly replaces the air intake hose between the cold air intake box and the turbo inlet, removing what little restriction is left in the intake system.Being made from aluminum will keep the weight down and the performance up!Note: Designed to be used with Steeda Cold Air Intake ONLY. It can work with other systems including OEM intake but fit at your own risk.Product BenefitsReplaces your entire inlet systemLightweight aluminum designKeeps air intake temps downDirect bolt on replacementUp to 5 more horsepower above what our cold air intake gainsWrinkle black finishSteeda has been building Cold Air Intakes for Ford performance vehicles longer than any other company!Fits Vehicle ModelsPart: 555-3175 : 2013/2014 Ford Focus STPart: 555-3208 : 2014+ Facelift Ford Focus STSELECT VERSION FROM DROPDOWN ABOVEINSTALL GUIDE: CLICK HERE

£189.00£157.50 (ex. VAT)
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Mishimoto Baffled Oil Catch Can, PCV Side, Ford Focus ST 2012+

Mishimoto

Single can mounting inline with the PCV system separates oil particles using 50 micron bronze filterApplication specific bracket mountsBlack hoses come pre-molded for reliable installCatch Can conveniently located next to the transmissionBillet 6061 aluminium sealed canDefends intercooler, intake system, and essential components from oil blow-byHelps reduce carbon build-up on the intake valvesHelps maintain proper octane levels to reduce potential detonationInternal air diverter turbulates air longer to improve oil separationFilters and can are fully serviceableMishimoto Lifetime WarrantyMishimoto Lifetime WarrantyInstallation Guidehe Mishimoto Focus ST Baffled Oil Catch Can is designed and engineered to reduce carbon buildup, a common issue with direct fuel injection engines. Mishimoto engineers found that in most vehicles, placing the catch can in the vacuum assisted PCV system of the vehicle will yield the most amount of oil accumulation during normal and aggressive driving. While a catch can placed on the crankcase vent system on the left side of the engine will yield very little accumulation on stock or lightly modified vehicles. Having only one catch can, tied into the PCV system, will work the best for the vast majority of Ford Focus STs on the road. The Mishimoto Focus ST catch can kit uses the Mishimoto 2-Port Compact Baffled Oil Catch Can with a bronze filter, and internal baffle to better separate the oil from the crankcase vapors. The kit comes with two direct-fit silicone hoses that connect the catch can with the crankcase and intake manifold. This kit also includes one application specific mounting bracket that not only is extremely easy to install but also mounts the can in a serviceable location, right next to the engines oil drain plug! Two plastic, 9.5mm barb fittings connect the hoses to the can. Like all of our products, this baffled catch can kit comes with the Mishimoto Lifetime Warranty!

£190.00£158.33 (ex. VAT)
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COBB Carbon Fiber Air Scoop - MK3 Focus ST

COBB Tuning

Fits:Ford Focus ST 2013-2018Increase airflow to the intake of your Focus ST with the COBB Carbon Fiber Air Scoop! This piece channels air from the large grille opening directly into the factory snorkel feeding the stock airbox.An increased amount of cooler airflow is key in making the most efficient power out of your Focus ST! Pulling in fresh air from the grill of the Focus ST ensures that air entering into the intake system is as close to ambient as possible.FEATURESFord Redline Carbon Fiber Air Scoop Focus RS 2016-2018, Focus ST 2013-20182x2 Twill Carbon Fiber WeaveDebossed COBB Logo If this item is not showing as in stock with us, this would be ordered direct from COBB Tuning, so this could take up to two weeks to arrive to you. 

£195.00£162.50 (ex. VAT)
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Direnza Ford Focus MK3 ST250 2.0 / RS 2.3 12-18 – Cold Air Induction Kit

Direnza

All Direnza Cold Air Induction Systems are supplied with a high quality, cone style air filter; designed to replace the OEM airbox, offering more surface area compared to the standard filter. Direnza air filters are manufactured from premium grade, washable cotton, ensuring long-lasting performance enhancements.Direnza Cold Air Induction Kits include lightweight alloy pipework mandrel-bent for accurate placement on your vehicle, and coated with a premium grade, black textured finish for a sleek appearance.Designed in-house by Direnza engineers, our Cold Air Induction Kits reduce blockages and significantly enhance air flow into the engine compared with stock induction arrangements, boosting your car’s soundtrack and performance.Heat-resistant silicone hoses are supplied with every Direnza Cold Air Induction Kit. An often-overlooked item, our easy-fit silicones are layered for extra durability, their 5mm wall consisting of four polyester layers finished with jet black pigment.Designed to replace the OE setup, providing up to 50% more filter surface area to help maximise capacityEngineered to help the 2.3L turbo engine breathe easier and improve throttle response from your Focus RS.Gains in power and torque are noticeable over a larger RPM rangeA straightforward way to give your MK3 RS a sporty, performance soundtrackComplete kit includes mandrel-bent alloy pipework, high quality cotton filter and high performance silicone hosesPlease note: Please ensure your MAF sensor is the the bolt in style before purchaseClick here to download fitting instructions

£209.99£174.99 (ex. VAT)
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Direnza Ford Focus MK3 ST250 2.0 12-18 – Cold Air Induction Kit

Direnza

All Direnza Cold Air Induction Systems are supplied with a high quality, cone style air filter; designed to replace the OEM airbox, offering more surface area compared to the standard filter. Direnza air filters are manufactured from premium grade, washable cotton, ensuring long-lasting performance enhancements.Direnza Cold Air Induction Kits include lightweight alloy pipework mandrel-bent for accurate placement on your vehicle, and coated with a premium grade, black textured finish for a sleek appearance.Designed in-house by Direnza engineers, our Cold Air Induction Kits reduce blockages and significantly enhance air flow into the engine compared with stock induction arrangements, boosting your car’s soundtrack and performance.Heat-resistant silicone hoses are supplied with every Direnza Cold Air Induction Kit. An often-overlooked item, our easy-fit silicones are layered for extra durability, their 5mm wall consisting of four polyester layers finished with jet black pigment.Designed to replace the OE setup, providing up to 50% more filter surface area to help maximise capacityEngineered to help the 2.0 turbo engine breathe easier and improve throttle response from your Focus STGains in power and torque are noticeable over a larger RPM rangeA straightforward way to give your ST250 a sporty, performance soundtrackComplete kit includes mandrel-bent alloy pipework, high quality cotton filter and high performance silicone hosesPlease note – Please ensure your MAF sensor is the twist in type before purchase                        

£209.99£174.99 (ex. VAT)
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Forge Induction Kit for the Ford Focus ST250

Forge

With Forge products the performance and quality always comes first, and this kit really goes out it's way to prove it. With a re-design of the inlet pipe work in alloy, and teaming up with the engineers at PiperCross, who have become famous for extracting extra horsepower on the British Touring Car circuit, we now have a kit which unleashed an extra 17BHP on our Ford Focus ST250 test car.As always we supply everything required for an easy installation. The silicone hose is available in a choice of blue or black, so simply select your choice in the options above, when ordering.This kit is compatible with pre 2015 cars fitted with the bolt on type induction sensor located on the intake pipework next to the airbox as shown below:If you do have the post 2015 model, please see FMINDK4*Please note - the Pipercross filter is excluded from the Forge lifetime warranty*Please also note: The engine cover cannot be fitted back to stock after installation of this kit

£265.03£220.86 (ex. VAT)
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Forge Induction Kit for the Ford Focus ST250 2015 onwards

Forge

Following a running change to the 2015 Ford Focus ST250, we have re-engineered this performance induction kit to suit. Quality CNC Mandrel bent alloy inlet pipe work with no joins, quality 4 ply silicone hoses, and a high performance PiperCross filter increase filtration and flow.As always we supply everything required for an easy installation.This kit is compatible with 2015 onwards cars fitted with the twist type induction sensor located on the intake pipework next to the airbox as shown below:*Please note - the Pipercross filter is excluded from the Forge lifetime warranty*If you do have the pre 2015 model, please see FMINDST250Please note: The engine cover cannot be fitted back to stock after installation of this kit 

£265.03£220.86 (ex. VAT)
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AIRTEC Stage 2 Induction Kit for Focus MK3 ST

Airtec / Autospecialist

Fits:Focus Mk3 ST Facelift/Pre-FaceliftThe new design Stage 2 induction kit that works perfectly with the standard Focus ST 250.Expect to see gains of 5-10BHP compared to the original air box.Enhanced induction sound, great looks and loud recirculation dump valve noise on let off.Features:Removes ugly original plastic & restrictive air boxAdds power and torque,More responsive and exciting driving experienceEnhanced induction sound and turbo recirculation noise (dump valve 'psssh')Free flowing Air filter & optional K&N dry charger filter coverCNC MAF sensor boss with AS engraved logoPowder coated alloy heat-shield with 80mm cold feed pipe which directs air to bottom of filterAdds style to your engine bayEasy fittingIt's easy to fit, looks great, sounds even better, doesn't cost the earth and can be put back to standard quickly.

£358.58£298.82 (ex. VAT)
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Steeda Focus ST cold air intake

Steeda

Take the intake system of your MK3 Ford Focus ST to the next level with our in house designed, tested, and manufactured Steeda Cold Air System.This cold air system does not require any ECM tuning making it an easy direct bolt on. With peak to peak gains of 10 horsepower at the wheels, and max gains of up to 16 horsepower, these are performance gains you will definitely feel.Our cold air intake incorporates a powder coated heat shield with a billet velocity stack, high flow serviceable air filter, and a silicone intake tube.Our system was designed to utilize the cold air feed coming from the grille, while the airbox seals directly to the hood liner to ensure a cool, dense air charge to the engine.Product BenefitsUtilizes the factory cold air feed duct from the grilleBillet aluminum velocity stackDoes not require any engine tuningGreatly increased intake resonanceLooks great under bonnetImproves resistance to heat soakBOLT ON POWER WITHOUT TUNESteeda part: 555-3169Fits Vehicle Models2013+ Ford Focus ST mk3

£388.00£323.33 (ex. VAT)
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COBB Ford Cold Air Intake Kit - MK3 Focus ST

COBB Tuning

The COBB Focus ST Intake incorporates the great OEM airbox design and makes it even better! We improved upon the factory airbox ram air ducting by including an oiled dual cone filter to increase airflow and to hear that great turbo sound. The constrained piping to the turbo is replaced with 3" mandrel bent aluminum tubing to maximize air flow and uses custom silicone couplers to fasten everything together. This is the next generation Focus ST Intake which features OEM-like fitment across all model years and an updated wrinkle black powdercoat finish. The COBB Focus ST Intake is the perfect first step towards Stage 2 power levels when paired with the COBB FMIC!Fitment verified for right-hand drive and left-hand drive vehicles. Maintaining the best qualities of the factory intake while improving on the rest, the COBB Ford Focus ST Intake is a bold, performance driven addition to your vehicle that will add a kick to your overall driving experience.Ford Focus ST Cold Air Intake3" Mandrel Bent Aluminum TubePowdercoated Wrinkle BlackPre-Oiled Dual Cone Air Filter4-ply Black Silicone CouplersMPN: 792150

£395.00£329.17 (ex. VAT)
Pro Alloy - Focus ST MK3 Boost Pipe Kit image 1
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Pro Alloy - Focus ST MK3 Boost Pipe Kit

Pro Alloy

Our hard pipe kit for the ST MK3 is an absolute must for high power cars. It eliminates all the restrictions created by the standard boost pipes whilst offering added strength and reliability to higher boost applications. We supply a full kit replacing the restrictive steel 50mm link pipe with a lightweight alloy pipe with 63mm bore. The intercooler to throttle body pipe is also replaced with a free flowing pipe, eliminating the restriction of the OEM set up. Easy fitment with no modifications required. Designed to fit the original Ford Intercooler or our own alloy front mount intercooler. May also fit other intercoolers if they fit the standard boost hoses. Strong lightweight design, stainless steel hose clips, high quality 5 ply black silicone hoses with the turbo outlet hose supplied with high temperature Nomex lining for added strength. Available in either satin silver or satin black.

£637.38£531.15 (ex. VAT)
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COBB Ford Redline Carbon Fiber Intake System - MK3 Focus RS & ST

COBB Tuning

The COBB Ford Focus ST/RS Redline Carbon Fiber Intake is a great way to dress up your engine bay while increasing engine performance at the same time. The carbon fiber tube and airbox lid are constructed of a 3k tow in a 2x2 twill weave pattern. Everything is held together with black 4-ply silicone couplers accompanied by black e-coated 304 stainless steel hardware. A gloss finish and bespoke Redline-specific badge keeps everything tidy under the hood. Included is a pre-oiled, dual cone, filter to increase airflow and amplify that great turbo sound. This intake is a complete factory replacement all the way to the turbo and is compatible with the original factory tune and all available COBB OTS maps.Fitment verified for right-hand drive and left-hand drive vehicles. Is there ever a bad time for Carbon Fiber parts?The COBB Redline Carbon Fiber Intake frees up airflow and adds a level of refinement under the hood of your Focus ST/RS without any compromises! Add the COBB Carbon Fiber Air Scoop to your Focus ST for the ultimate carbon fiber intake system!Ford Redline Carbon Fiber Intake System Focus RS 2016-2018, Focus ST 2013-20183k tow 2x2 Twill Carbon Fiber ConstructionLarge 3" piping for ideal flowPre-Oiled and Re-usable Dual Cone Air FilterBlack 4-ply Silicone CouplersBlack E-Coated 304 Stainless Steel ClampsMPN: C-793150

£725.00£604.17 (ex. VAT)