2011 Subaru WRX Performance Air Intake Systems

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    • Injen® SP Series Cold Air Intake System
      (4 reviews)
      # 360459
      Subaru WRX STI Sedan 2.5L 4 Cyl 2011, SP Series Cold Air Intake System by Injen®. The SP Series Cold Air Intake System is made for the enthusiast who wants maximum horsepower from a tuned cold air intake system. This cold air...
      Delivers more oxygen to the combustion chamber by drawing in cooler airUses the patented MR Technology tuning process to ensure the air/fuel ratio is within optimum limits
      $284.73
    • K&N® 69 Series Typhoon Cold Air Intake Kit
      (0 reviews)
      # 86061620
      Subaru WRX 2011, 69 Series Typhoon Cold Air Intake Kit by K&N®. Improve airflow and increase horsepower on your vehicle. This intake kit replaces the factory air intake system with a custom designed air intake tube and a free...
      Guaranteed to increase horsepower and improve accelerationCustom designed and engineered for each application
      $300.99 - $323.99
    • AEM® Cold Air Intake System
      (0 reviews)
      # 55968811
      Subaru WRX / WRX STI 2011, Cold Air Intake System by AEM®. To deliver cooler air to the engine, this air intake system places the air filter outside the engine compartment. Cooler air is denser than warm air and so contains more...
      Delivers more oxygen to the combustion chamber by drawing in cooler airCustom designed and engineered to deliver maximum power for each specific vehicle
      $259.99
    • Takeda® Attack Cold Air Intake System with Pro DRY S Air Filter
      (0 reviews)
      # 81748229
      Subaru WRX / WRX STI Base 2011, Attack Cold Air Intake System with Pro DRY S Air Filter by Takeda®. Polished. This system is for the enthusiast who wants maximum performance from their sport compact. It positions a high flow...
      Custom designed for each applicationDelivers more oxygen to the combustion chamber by drawing in cooler, denser air
      $295.00
    • Agency Power® Black / Red CNC Aluminum Cold Air Intake Kit
      (0 reviews)
      # 15848143
      Subaru WRX 2011, Black / Red CNC Aluminum Cold Air Intake Kit by Agency Power®. The Agency Power is made for the enthusiast who wants maximum horsepower from a tuned cold air intake system. This cold air system positions a...
      Delivers more oxygen to the combustion chamber by drawing in cooler airCustom designed and engineered to deliver maximum power for each specific vehicle
      $90.00 - $350.00
    • Agency Power® Black / Red CNC Aluminum Short Ram Intake Kit
      (0 reviews)
      # 15848144
      Subaru WRX 2011, Black / Red CNC Aluminum Short Ram Intake Kit by Agency Power®. The Agency Power is made for the enthusiast who wants maximum horsepower from a tuned cold air intake system. This cold air system positions a...
      Delivers more oxygen to the combustion chamber by drawing in cooler airCustom designed and engineered to deliver maximum power for each specific vehicle
      $300.00
    • HKS® Premium Suction Kit
      (0 reviews)
      # 70195944
      Subaru WRX STI Sedan With GVF Chassis 2011, Premium Suction Kit by HKS®. Size: Type 1. Includes: Aluminum Suction Pipe, HKS Silicon Hose, Bead Type Hose Band, Super Hybrid Filter, Gold Metal Logo Sticker. Aluminum suction pipe and...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $413.00
    • HKS® Racing Suction Reloaded Kit
      (0 reviews)
      # 70194049
      Subaru WRX / WRX STI 2011, Racing Suction Reloaded Kit by HKS®. Back Plate Color: Black. Element Size: 200 mm. Inlet Size: 80 mm. Included in each kit is HKS Reloaded filter with its patented Super-Funnel and new technical...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $330.40
    • PERRIN Performance® Cold Air Intake
      (0 reviews)
      # 73693927
      Subaru WRX / WRX STI 2011, Cold Air Intake by PERRIN Performance®. Add horsepower and style under your hood with a PERRIN Cold Air Intake. The PERRIN Intake has been designed with proper MAF alignment and tubing size to maintain...
      Designed to add 15-30 whp to your vehicleCARB approved
      $278.10
    • AEM® DryFlow Panel Air Filter
      (2 reviews)
      # 55967603
      Subaru WRX / WRX STI 2011, DryFlow Panel Air Filter by AEM®. AEM DryFlow Air Filters are washable synthetic air filters designed for an optimum combination of air flow, filtration, and performance. AEM DryFlow filters use an...
      Exceeds the engine’s normal airflow capacityEasy to clean – no oiling required
      $39.99
    • aFe® Pro 5R Air Filter
      (1 reviews)
      # 919943
      Subaru WRX 2011, Pro 5R Air Filter by aFe®. The Pro 5R air filter provides increased airflow to your engine without sacrificing filtration ability. The increased airflow allows your engine to make more power, and have better...
      Improves airflow and engine performanceProvides superior air filtration and engine protection
      $62.95
    • aFe® Pro DRY S Air Filter
      (0 reviews)
      # 922793
      Subaru WRX 2011, Pro DRY S Air Filter by aFe®. The Pro DRY S is the perfect combination of performance, protection and convenience. When you want increased airflow with superior filtration, but ease of maintenance is a high...
      Improves airflow and engine performanceProvides superior air filtration and engine protection
      $73.95
    • GREEN FILTER® Factory Replacement Air Filter
      (1 reviews)
      # 3353600
      Subaru WRX / WRX STI Base 2011, Factory Replacement Air Filter by GREEN FILTER®. Replace your factory air cleaner filter element with a Green Filter oiled-cotton filter and never buy another filter as long as you own your vehicle....
      Cleanable, reusable filter element will outlast your carTraps particles as small as 5 microns
      $45.10
    • HKS® Super Hybrid Filter
      (0 reviews)
      # 70194048
      Subaru WRX / WRX STI 2011, Super Hybrid Filter by HKS®. 3 layered filter divides, collects intake air and smoothes air flow. It enables quick response that is required for sport filter. Newly developed Non-woven fabric is the first...
      With high strength double frame, strong frame can be used for high horsepower.Shape of re-designed top frame enables smooth air flow.
      $40.25
    • PERRIN Performance® DryFlow Cone Filter
      (0 reviews)
      # 84938625
      Subaru WRX / WRX STI 2011, 2.75" x 11" DryFlow Cone Filter by PERRIN Performance®. This is a direct replacement for most PERRIN Performance intake systems including the Big MAF intakes. PERRIN Performance filters feature a unique...
      Two-piece design for easy cleaningOpen cell foam element
      $62.10
    • PERRIN Performance® Panel Air Filter
      (0 reviews)
      # 73911356
      Subaru WRX / WRX STI 2011, Panel Air Filter by PERRIN Performance®. Don’t let a restrictive OEM paper filter get between you and true performance. The PERRIN Performance™ drop-in Panel Filter is the answer for more horsepower....
      Open cell foam elementCleaner for efficient and trouble-free cleanup
      $43.20
    • PERRIN Performance® 4 Bar MAP Sensor
      (0 reviews)
      # 73693878
      Subaru WRX 2011, 4 Bar MAP Sensor by PERRIN Performance®. The PERRIN Performance 4 Bar MAP Sensor allows full control of boost up to 43psi of boost!
      Allows to safely run boost levels above 24 PSIQuick and easy installation
      $121.50
    • PERRIN Performance® Afta-Maf Intake Tube
      (0 reviews)
      # 73693881
      Subaru WRX 2011, Afta-Maf Intake Tube by PERRIN Performance®. Construction: 5-ply Silicone. The PERRIN Performance Afta MAF Hose replaces the factory corrugated rubber hose between the inlet tube and air box. This is an awesome...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $79.20 - $89.10
    • PERRIN Performance® Turbo Inlet Hose
      (0 reviews)
      # 73693902
      Subaru WRX 2011, Turbo Inlet Hose by PERRIN Performance®. Silicone technology allows us to design a turbo inlet hose that is better in all aspects than the OEM part and increases your engines horsepower and performance. The PERRIN...
      Designed to provide increased air flowSS internal support wire for added rigidity and collapse prevention
      $238.50 - $250.20
    • Cusco® Throttle Body Hose
      (0 reviews)
      # 61627410
      Subaru WRX STI 2011, Throttle Body Hose by Cusco®.
      $48.60
    • Torque Solution® Thermal Intake Manifold Gaskets
      (0 reviews)
      # 62402790
      Subaru WRX 2011, Thermal Intake Manifold Gaskets by Torque Solution®. Thermal Intake Manifold Gaskets use a proprietary gasket material that lowers intake temps by reducing heat transfer from the head to the intake manifold. These...
      $43.38
    • Mishimoto® Throttle Body Silicone Hose
      (0 reviews)
      # 80951549
      Subaru WRX United States 2011, Throttle Body Silicone Hose by Mishimoto®. Includes: 3 Silicone Hoses, 7 T-Bolt Clamps. The Mishimoto Silicone Throttle Body Hose is a direct OEM replacement for the stock rubber hose. The stock...
      Direct OEM fitManufactured from 100% high-grade silicone and heat-resistant embedded fibers
      $54.00
    • Mahle® Air Filter
      (0 reviews)
      # 53991970
      Subaru WRX / WRX STI 2011, Air Filter by Mahle®. If you have a dirty air filter, clogged PCV valve, or defective MAF sensor you may be tempted to just run down to the local auto parts chain store for a replacement, but before you...
      OE quality parts from top original equipment and aftermarket manufacturersFast shipping; 1-2 day delivery time regardless of where you’re located
      $34.36
    • ACDelco® Professional™ Air Filter
      (0 reviews)
      # 86086697
      Subaru WRX / WRX STI 2458 CC 2011, Professional™ Air Filter by ACDelco®. Designed utilizing the latest technology, this Professional Air Filter by ACDelco features premium quality and will perform better than advertised. Perfect...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $13.90
    • WIX® Air Filter Panel
      (0 reviews)
      # 64447623
      Subaru WRX / WRX STI 2011, Air Filter Panel by WIX®. Considering as much as 10,000 gallons of air must pass through the air filter for every gallon of fuel the engine consumes, WIX air filters play a vital part in preventing...
      Prevents foreign particles like carbon, soot and abrasives from entering the fuel mixEnsures superior engine protection
      $11.76
    • Standard® Intermotor™ Manifold Absolute Pressure Sensor
      (0 reviews)
      # 45115695
      Subaru WRX / WRX STI 2011, Intermotor™ Manifold Absolute Pressure Sensor by Standard®. Do you hear nothing but “click, click” when you turn the key? Is the BATTERY dash light on? Your vehicle is in need of engine electrical...
      OE quality parts from top original equipment and aftermarket manufacturersFast shipping; 1-2 day delivery time regardless of where you’re located
      $246.87
    • Denso® Mass Air Flow Sensor
      (0 reviews)
      # 21071399
      Subaru WRX / WRX STI 2458 CC 2011, Mass Air Flow Sensor by Denso®. The air filter is the last line of defense against the harmful airborne abrasives that have been proven to wear out engines before their time. With OE-quality...
      Glass film coated sensing elements reduces contamination and improves reliabilityPlatinum wire sensing element responds quickly to changes in air flow
      $94.59
    • Mahle® Intake Manifold Gasket
      (0 reviews)
      # 8542562
      Subaru WRX STI EJ257 Engine 2011, Intake Manifold Gasket by Mahle®. Upper Intake to Lower Intake. Note: Between Upper and Lower Intake Manifold. Is your vehicle feeling down on power? Do you see dark puddles on the ground when you...
      $8.81
    • APEXi® Power Intake Panel Filter
      (0 reviews)
      # 79118422
      Subaru WRX / WRX STI EJ25 Engine / FA20 Engine 2011, Power Intake Panel Filter by APEXi®. Some manufacturers of performance air filters make aggressive claims about their filter's ability to make power, but leave out the fact that...
      $62.43
    • Mishimoto® Performance Aluminum Cold-Air Intake
      (0 reviews)
      # 80951495
      Subaru WRX / WRX STI United States 2011, Performance Aluminum Cold-Air Intake by Mishimoto®. Provide maximum, unrestricted airflow with the Mishimoto Performance Race Intake. Mishimoto pulled out all of the stops with this intake,...
      Installs in under 30 minutesLarger diameter intake pipe for large turbochargers and more aggressive engine tunes
      $186.34 - $299.97
    • Mishimoto® Silicone Induction Hose
      (1 reviews)
      # 80951562
      Subaru WRX United States 2011, Silicone Intakes by Mishimoto®. The Mishimoto Silicone Intake Boot is made from a combination of high-grade silicone and heat-resistant embedded fibers for a high-quality replacement kit for your OEM...
      Direct OEM fitManufactured from 100% high-grade silicone and heat-resistant embedded fibers
      $189.00 - $222.00
    • AVO® Induction Power Air Filter Kit
      (0 reviews)
      # 62403424
      Subaru WRX / WRX STI 2011, Induction Power Air Filter Kit by AVO®.
      $63.18 - $193.28
    • AVO® Silicone Intake System
      (0 reviews)
      # 62403427
      Subaru WRX 2011, Silicone Intake System by AVO®.
      $230.09 - $230.10
    • AVO® Induction Cold Air Box Kit
      (0 reviews)
      # 61628692
      Subaru WRX / WRX STI 2011, Induction Cold Air Box Kit by AVO®.
      $142.66
    • AVO® Panel Air Filter
      (0 reviews)
      # 61628689
      Subaru WRX 2011, Panel Air Filter by AVO®.
      $51.60
    • K&N® Apollo Cold Air Intake System
      (0 reviews)
      # 534642
      Apollo Cold Air Intake System by K&N®. Cooler air inlet temperatures mean more horsepower. This universal kit turns any air intake system into a Cold Air intake system. It replaces the OEM airbox with a K&N air filter in a special...
      $129.99 - $209.99
    • Spectre Performance® Air Intake Hump Hose
      (0 reviews)
      # 12037463
      Universal Air Intake Hump Hose by Spectre Performance®. Rooted in racing, Spectre Performance designs and builds every product with the same goal in mind - the best performance in the market proven on the racetrack! All products...
      High-tech engine parts for the most power and best performanceThe finest exterior and interior parts for superior appearance and functionality
      $32.40 - $37.02
    • Spectre Performance® Air Intake Tube Collar Clamp
      (0 reviews)
      # 12039508
      Universal Air Intake Tube Collar Clamp by Spectre Performance®. Rooted in racing, Spectre Performance designs and builds every product with the same goal in mind - the best performance in the market proven on the racetrack! All...
      High-tech engine parts for the most power and best performanceThe finest exterior and interior parts for superior appearance and functionality
      $8.52 - $12.78
    • AIRAID® Cone Air Filter
      (5 reviews)
      # 80390519
      Universal Cone Air Filter by AIRAID®. Advanced air filtration technology, superior construction and the world's best warranty make an AIRAID air filter the best you can buy. It allows increased airflow and provides better air...
      Improves airflow and engine performanceProvides superior air filtration and engine protection
      $25.40 - $109.04
    • Vibrant Performance® The Classic Performance Air Filter
      (0 reviews)
      # 78903132
      Universal The Classic Performance Air Filter by Vibrant Performance®. Vibrant Performance “Classic Filters” feature a 4 ply pleated cotton-gauze element that allows for significantly more airflow than a stock filter while...
      Made of High Quality MaterialsIdeal for All Motor and Forced Induction race applications
      $21.95 - $65.00
    • Holley® 10" Chrome Round Air Cleaner (120-145)
      (0 reviews)
      # mpn358495189
      10" Chrome Round Air Cleaner by Holley®. The Off-Road Truck Avenger is designed specifically for off-road applications. The unique fuel metering block eliminates fuel spillover through the boosters at extreme angles allowing for 40...
      Gold Dichromate finish for extreme off road environmentsSingle feed fuel inlet for ease of installation
      $35.82
    • Holley® 14" Chrome Round Air Cleaner (120-102)
      (0 reviews)
      # mpn358495186
      14" Chrome Round Air Cleaner by Holley®.
      $44.02
    • Holley® 14" Power Shot Air Cleaner (120-146)
      (0 reviews)
      # mpn358495190
      14" Power Shot Air Cleaner by Holley®. The Off-Road Truck Avenger is designed specifically for off-road applications. The unique fuel metering block eliminates fuel spillover through the boosters at extreme angles allowing for 40...
      Gold Dichromate finish for extreme off road environmentsSingle feed fuel inlet for ease of installation
      $75.81
    • Holley® Air Cleaner Replacement Element (120-144)
      (0 reviews)
      # mpn620677737
      Air Cleaner Replacement Element by Holley®. The Off-Road Truck Avenger is designed specifically for off-road applications. The unique fuel metering block eliminates fuel spillover through the boosters at extreme angles allowing for...
      Gold Dichromate finish for extreme off road environmentsSingle feed fuel inlet for ease of installation
      $37.88
    • Holley® Custom Oval Air Cleaner (120-141)
      (0 reviews)
      # mpn358495188
      Custom Oval Air Cleaner by Holley®. Holley mechanical fuel pumps range from 80 GPH to 225 GPH in many various applications to meet the fuel demands of most engines.
      High output fuel flowFlows 110 GPH free flow
      $115.95
    • Holley® Powershot Air Filter
      (0 reviews)
      # 63646440
      Powershot Air Filter by Holley®. The Holley GM LS3/L92 Modular Hi-Ram Intake Manifold is introduced as a cost effective alternative to fabricated sheet-metal for high-performance applications where induction system height is not...
      Single Plane with Isolated PlenumSquare Bore Carburetor Mounting Flange
      $52.23 - $60.42
    • Injen® High Performance Air Filter
      (19 reviews)
      # 375936
      Universal High Performance Air Filter by Injen®. Replace your worn out air filter with this high flow High Performance filter. It features a built-in velocity stack for added performance, urethane top and base to resist heat...
      Improves engine airflowIncreases horsepower and acceleration
      $49.32 - $57.54
    • K&N® Dual Flange Oval Straight Air Filter
      (0 reviews)
      # 25513976
      Universal Dual Flange Oval Straight Air Filter by K&N®. Get better performance, superior engine protection and more economical operation with a K&N Air Filter. K&N Universal Air Filters are available for just about any application.
      Improves engine airflowIncreases horsepower and acceleration
      $38.99 - $217.99
    • K&N® Oval Tapered Air Filter
      (0 reviews)
      # 25636561
      Universal Oval Tapered Air Filter by K&N®. Get better performance, superior engine protection and more economical operation with a K&N Air Filter. K&N Universal Air Filters are available for just about any application.
      Improves engine airflowIncreases horsepower and acceleration
      $32.99 - $196.99
    • K&N® Round Tapered Air Filter
      (6 reviews)
      # 25611518
      Universal Round Tapered Air Filter by K&N®. Get better performance, superior engine protection and more economical operation with a K&N Air Filter. K&N Universal Air Filters are available for just about any application.
      Improves engine airflowIncreases horsepower and acceleration
      $22.08 - $122.99
    • AEM® Clamp-On Round DryFlow Racing Air Filter
      (0 reviews)
      # 328142
      Universal Clamp-On Round DryFlow Racing Air Filter by AEM®. Let your engine breathe with an AEM DryFlow Racing filter! Every DryFlow filter is engineered to exceed the engine's normal airflow requirement. And thanks to AEM's...
      Exceeds the engine’s normal airflow capacityEasy to clean – no oiling required
      $68.99
    • AEM® Oval DryFlow Air Filter
      (0 reviews)
      # 313145
      Universal Oval DryFlow Air Filter by AEM®. Let your engine breathe with an AEM DryFlow filter! Every DryFlow filter is engineered to exceed the engine's normal airflow requirement. And thanks to AEM's DryFlow technology, cleaning...
      Exceeds the engine’s normal airflow capacityEasy to clean – no oiling required
      $39.99 - $97.99
    • AEM® Oval DryFlow Brute Force Air Filter
      (0 reviews)
      # 313143
      Universal Oval DryFlow Brute Force Air Filter by AEM®. These filters are much larger than standard DryFlow filters and engineered to exceed the airflow requirements of large displacement engines. They are designed to be durable and...
      Exceeds the normal airflow capacity of large displacement enginesEasy to clean – no oiling required
      $71.99 - $76.99
    • AEM® Round DryFlow Air Filter
      (2 reviews)
      # 322114
      Universal Round DryFlow Air Filter by AEM®. Let your engine breathe with an AEM DryFlow filter! Every DryFlow filter is engineered to exceed the engine's normal airflow requirement. And thanks to AEM's DryFlow technology, cleaning...
      Exceeds the engine’s normal airflow capacityEasy to clean – no oiling required
      $24.53 - $64.99
    • AEM® Round DryFlow Brute Force Air Filter
      (1 reviews)
      # 313144
      Universal Round DryFlow Brute Force Air Filter by AEM®. These filters are much larger than standard DryFlow filters and engineered to exceed the airflow requirements of large displacement engines. They are designed to be durable...
      Exceeds the normal airflow capacity of large displacement enginesEasy to clean – no oiling required
      $49.99 - $55.99
    • AIRAID® Air Filter
      (5 reviews)
      # 80390852
      Universal Round Air Filter by AIRAID®. Advanced air filtration technology, superior construction and the world's best warranty make an AIRAID air filter the best you can buy. It allows increased airflow and provides better air...
      Improves airflow and engine performanceProvides superior air filtration and engine protection
      $38.66 - $91.90
    • Airaid® Sweet 16" Round Air Filter
      (0 reviews)
      # 13606468
      Universal Sweet 16" Round Air Filter by Airaid®, 16" OD x 14" ID. Advanced air filtration technology, superior construction and the world's best warranty make an AIRAID air filter the best you can buy. It allows increased airflow...
      Improves airflow and engine performanceProvides superior air filtration and engine protection
      $44.29 - $107.00
    • AIRAID® Breather Filter
      (5 reviews)
      # 440783
      Universal Breather Filter by AIRAID®. Keep your engine breathing properly and looking good with these crankcase vent filters.
      Washable and reusableAvailable in several diameters
      $17.24 - $27.44
    • Weapon-R® Secret Weapon Air Filter
      (10 reviews)
      # 282485
      Universal Secret Weapon Air Filter by Weapon-R®. The Secret Weapon air filter performs better than any other air filter available in the market today. It provides maximum airflow with the protection of Polyurethane foam.
      Integral velocity stack increases engine airflowPolyurethane foam flows more air and traps more dirt than conventional filters
      $65.00 - $75.00
    • Weapon-R® Dragon Air Filter
      (17 reviews)
      # 282419
      Universal Dragon Air Filter by Weapon-R®. The Polyurethane foam in the Dragon air filter flows more air and traps more dirt than comparable paper and cotton filters. The Dragon air filter is one of the highest rated air filters in...
      Polyurethane foam flows more air and traps more dirt than conventional filtersDisassembles easily for cleaning
      $55.00 - $65.00




    Guides & Articles

    • Performance Parts
      We all know that achieving better fuel economy while driving puts money back in your pocket and does the environment a favor. But for those who are actively interested in squeezing the most out of every drop of gas, getting more miles per gallon can actually become a sport - especially if a vehicle has a manual transmission that can be upshifted earlier and put into neutral during downhill grades or when coasting to a stop sign.
    • Performance Parts
      In today's world, saving money wherever possible has become essential. But it's important not to lose sight of the fact that, sometimes, a product that costs more up front will save you more money over time. In our business, we've seen far too many consumers judge products solely on the basis of their initial cost, completely neglecting any long-term economy and benefits. When it comes to automobiles, "performance" air filters are a perfect example of this.
    • Performance Parts
      Aftermarket air intake systems have become one of the most popular engine modifications available for late model cars and trucks. An easy question to ask is why are these so popular? After all, didn't engineers who work for your vehicle manufacturer spend years developing the best engine components available? Since power and fuel economy are major selling points these days, it's hard to imagine car companies not doing everything they can to maximize horsepower, miles per gallon, or both.
    • Performance Parts
      There are many types of aftermarket air intake systems that range from simple and inexpensive to elaborate. In the scope of this article, we'll examine the different types of air intakes, what they do, and look at a few specific product examples of each. But in short, performance air intake setups increase airflow into your engine - boosting combustion and creating more horsepower and torque that you can actually feel. Their relatively low cost and easy installation (bolt-on in most cases) keeps them in popular demand by car enthusiasts that own everything from 1.5-liter turbo motors to big block V8 engines.
    • Performance Parts
      An intake manifold is an integrated assembly that sits atop the engine, consisting of a series of tubes which distribute fresh outside air to each and every cylinder. On V-shaped engine blocks, an intake manifold typically sits between the two cylinder banks while inline engines may feature a manifold to the side of the cylinder head. Intake manifolds serve as a mounting point for carburetors, throttle body assemblies, fuel injectors, thermostats, and more depending on vehicle manufacturer engineering preferences. Intake manifolds may also serve to route coolant through dedicated channels in order to remove heat from the engine. Because of their location and functionality, intake manifold assemblies are under constant stress from engine vacuum pressure as well as direct heat from coolant, cylinder combustion gasses, and the cylinder heads to which they are mounted.

    Popular Products

    2011 Subaru WRX Performance Air Intake Systems Reviews

    Average rating:  5  5 - 4 reviews
    5 of 5
    So Worth It
    I bought the Injen sp series cold air intake in wrinkle red. Me and one of my friends installed it in my garage in about an hour (would have been easier if we knew every bolt was 10mm). After installing it worked perfect from the start, sounds tremendous when you put some gas to it, my stock blow off valve never really functioned before the intake and now it's loud and proud. You can defiantly feel the difference in power and pickup immediately. Overall great product, easy install, great results. Injen really knows how to do it.
    MPosted by Michael (Clearwater, FL) /
    2009 Subaru WRX
    Was this review helpful for you? Yes
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