2004 Subaru WRX Performance Air Intake Systems

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    • (0 reviews)
      # 377217784
      Subaru WRX 2004, IS Series Polished Silver Short Ram Air Intake System by Injen®. The IS Series is a traditional, underhood air intake system that takes the place of your factory airbox and air filter, and the factory air intake...
      Improves airflow into the engineIncreases horsepower
      $201.79
    • (0 reviews)
      # 377217670
      Subaru WRX 2004, Aluminum 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
      +1
      $294.99 - $327.99
    • (0 reviews)
      # 377218288
      Subaru WRX 2004, Secret Weapon Aluminum Neo Titanium Short Ram Air Intake System by Weapon-R®. The Secret Weapon Air Intake System uses patented technology to feed the engine 3 times as much air as other systems. As a result,...
      Patented technology increases airflow 3 times more than conventional systemsEach system is tuned to maximize engine performance output
      $289.00
    • (0 reviews)
      # 377218313
      Subaru WRX 2004, Secret Weapon Aluminum Polished Short Ram Air Intake System by Weapon-R®. The Secret Weapon Air Intake System uses patented technology to feed the engine 3 times as much air as other systems. As a result, engine...
      Patented technology increases airflow 3 times more than conventional systemsEach system is tuned to maximize engine performance output
      $220.15
    • (0 reviews)
      # 377217821
      Subaru WRX / WRX STI 2.0L 2004, 57i Series Generation I Aluminum Black Cold Air Intake System with Intake Pipe by K&N®. This induction kit is an easy and inexpensive way to increase airflow into your engine. It replaces your...
      Guaranteed to increase horsepowerSpecifically designed for each application
      $177.99
    • (0 reviews)
      # 377217838
      Subaru WRX / WRX STI 2004, 69 Series Typhoon® Aluminum Cold Air Intake System 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...
      Guaranteed to increase horsepower and improve accelerationCustom designed and engineered for each application
      $308.99 - $310.99
    • (0 reviews)
      # 377217796
      Subaru WRX Sedan 2004, RD Series Cold Air Intake System by Injen®. The RD Series is made for the enthusiast who wants improved mid-range power. This cold air system positions a high-flow air filter behind the bumper, where it can...
      Delivers more oxygen to the combustion chamber by drawing in cooler airCustom designed and engineered to deliver maximum power for each specific vehicle
      $308.45
    • (0 reviews)
      # 377218274
      Subaru WRX STI 2.5L 2004, 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 system positions...
      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
      $315.49
    • (0 reviews)
      # 377217731
      Subaru WRX 2004, Dragon Aluminum Polished Short Ram Air Intake System by Weapon-R®. Weapon-R Intake Systems are CNC Mandrel Bent out of 6061 aluminum, and then Hand Tig Welded to ensure a positive seal and proper fitment. Each one...
      Custom designed and engineered for each applicationEach system is tuned to maximize engine performance output
      +4
      $177.65 - $182.65
    • (1 review)
      # 413428069
      Subaru WRX / WRX STI 2004, Magnum Force™ Stage 2 Aluminum Black Cold Air Intake System by aFe®. The aFe Stage 2 Cold Air Intake System replaces your entire factory air intake system with a large high-flow aFe air filter, open...
      Improves airflow to your engineIsolates the air filter from engine heat, enabling it to take in cooler, denser air
      $300.00
    • (0 reviews)
      # 377217699
      Subaru WRX / WRX STI 2004, Aluminum Short Ram Air Intake System by AEM®. This system is an economical alternative to AEM's Cold Air Intake system. The Short Ram system installs easily under the hood, and on some applications...
      Delivers increased performance for less costEasily installs under the hood
      $187.99 - $198.99
    • (0 reviews)
      # 377218199
      Subaru WRX 2004, Retain Stage 2 Aluminum Polished Short Ram Air Intake System with Pro Dry S Filter by Takeda®. Improve your car's performance and enhance the appearance of your engine bay with the Takeda Retain Short Ram Air...
      Custom designed for each applicationIncreases airflow, for gains in horsepower and torque
      $329.00
    • (0 reviews)
      # mpn470412690
      Subaru WRX / WRX STI 2004, Power Short Ram Air Intake System by APEXi®. When it comes to impeccable design, unsurpassed quality, and great value, Apexi leaves all the rivals far behind. This high-grade Apexi product is a great one...
      Designed for superior air filtrationProvides virtually unrestricted air flow over the OE
      $180.86
    • (0 reviews)
      # mpn457852201
      Subaru WRX STI 2.5L 2004, Cold Intake Airbox by AVO®. This premium product is the best way to go for those looking for the highest quality replacement that offers supreme levels of quality, performance and reliability. Designed to...
      Designed to unlock more performance out of your vehicleDeliver a reasonable balance of strength and durability
      $155.00
    • (0 reviews)
      # mpn457852193
      Subaru WRX / WRX STI 2004, Power Air Intake System by AVO®. This premium product is the best way to go for those looking for the highest quality replacement that offers supreme levels of quality, performance and reliability....
      Designed to unlock more performance out of your vehicleDeliver a reasonable balance of strength and durability
      $190.00
    • (0 reviews)
      # 377218262
      Subaru WRX / WRX STI 2004, Aluminum Powder Coated Silver Cold Air Intake System by DC Sports®. DC Sports Air Intake Systems provide the best of both worlds in heat protection and improved breathability. Every kit includes a air...
      Re-locates filter to outside the engine compartment for cooler air ingestionDesigned for maximum power gains
      $182.76
    • (0 reviews)
      # 377218305
      Subaru WRX / WRX STI 2004, Aluminum Powder Coated Silver Short Ram Air Intake System by DC Sports®. DC Sports Air Intake Systems provide the best of both worlds in heat protection and improved breathability. Every kit includes a...
      Gives your vehicle a serious performance boostPrecision engineered for your vehicle
      $122.52
    • (0 reviews)
      # 377217866
      Subaru WRX 2004, Performance Aluminum Silver Cold Air Intake System by Mishimoto®. Provide maximum, unrestricted airflow with the Mishimoto Performance Race Intake. Mishimoto pulled out all of the stops with this intake, featuring...
      Installs in under 30 minutesLarger diameter intake pipe for large turbochargers and more aggressive engine tunes
      $186.34 - $299.97
    • (0 reviews)
      # 377217656
      Subaru WRX 2004, Racing Short Ram Suction Reloaded Kit by HKS®. With stock suction system, induction air hit to corrugated portion of hose and makes swirl and resistance. The specially designed pipe reduces corrugated portion and...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $286.46
    • (0 reviews)
      # mpn469960150
      Subaru WRX / WRX STI 2004, Super Power Flow Reloaded Kit by HKS®. Ambient exposure type air cleaner has larger area of induction inlet that increases intake air volume. Engine horsepower and torque will be more than panel filters....
      Frame SupportIt fits to aluminum back plate softly and fixes Super Stealth Frame firmly. It will also be a guide for filter to surface of the hemisphere that make easy for replacement work of the filter.
      $143.23
    • (0 reviews)
      # 377218022
      Subaru WRX 2004, Cold Air Intake System by PERRIN Performance®. Add horsepower and style under your hood with the PERRIN cold air intake. The PERRIN intake has been designed with precise MAF alignment and tubing size to maintain...
      Perfect cold air bathAdd 5 wheel HP to your car
      $333.00
    • (0 reviews)
      # 377218052
      Subaru WRX 2004, Short Ram Air Intake System by PERRIN Performance®. Increase horsepower and style under your hood. The PERRIN Performance intake system uses proper MAF alignment and plumbing size, which are crucial to maintain...
      Precision CNC construction for perfect fitThroaty deep tone sound
      $199.80
    • (0 reviews)
      # 377217850
      Subaru WRX / WRX STI 2004, 33 Series Panel Red Air Filter by K&N®. K&N's replacement air filters are designed to increase horsepower and acceleration while providing excellent filtration. K&N makes over 1,200 different replacement...
      Designed to boost horsepower and rate of accelerationCan be cleaned and used again
      $50.99
    • (1 review)
      # 377217622
      Subaru WRX 2004, Magnum Flow™ Pro 5R Flat Panel Blue Air Filter by aFe®. Constructed with 100% polyurethane on all four sides, this high flow, oiled OE replacement performance filter will out flow stock paper filter for improved...
      Improves airflow for better performance and accelerationPre-oiled, washable/reuseable air filter for long service life with life-time warranty
      $69.00
    • (0 reviews)
      # 377217633
      Subaru WRX 2004, Magnum Flow™ Pro Dry S Panel Gray Air Filter by aFe®. Constructed with 100% polyurethane on all four sides, "oil free" OE replacement performance filter will outflow the stock filter by up to 44% for improved...
      Constructed with 100% polyurethane on top and bottomOiled OE replacement high performance filter will outflow stock paper filter
      $69.00
    • (1 review)
      # 445980539
      Subaru WRX / WRX STI 2004, SynthaMax® Panel Red 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...
      Improves airflow and engine performanceProvides superior air filtration and engine protection
      $65.75
    • (1 review)
      # 377218191
      Subaru WRX / WRX STI 2.0L 2004, HPR™ Panel Red Air Filter by Spectre Performance®. Spectre’s High Performance Replacement Air Filters are engineered to outperform ordinary paper filters by providing increased air flow for...
      High performance and high air flow filterFilter media is non-woven synthetic and pre-dyed
      $17.54
    • (0 reviews)
      # 377218138
      Subaru WRX 2004, Oiled Cleanable Cotton Panel Red Air Filter by S&B®.
      High quality at an affordable priceExpertly made from premium materials
      $33.05
    • (0 reviews)
      # mpn457852194
      Subaru WRX / WRX STI 2004, High Flow Panel Air Filter by AVO®. This premium product is the best way to go for those looking for the highest quality replacement that offers supreme levels of quality, performance and reliability....
      Designed to unlock more performance out of your vehicleDeliver a reasonable balance of strength and durability
      $49.00
    • (0 reviews)
      # 377217717
      Subaru WRX 2004, Panel White Air Filter by BTP®. This BTP superior part helps your air intake system to provide improved airflow to ensure your engine operates at its maximum. This performance part is made from premium materials...
      Designed for the ultimate in performanceMade from premium materials
      $31.21
    • (0 reviews)
      # mpn469960095
      Subaru WRX / WRX STI 2004, Super Hybrid Air 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...
      With high strength double frame, strong frame can be used for high horsepower.Shape of re-designed top frame enables smooth air flow.
      $31.24
    • (0 reviews)
      # 377218238
      Subaru WRX 2004, Panel Black 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. A...
      Open cell foam elementCleaner for efficient and trouble-free cleanup
      $43.20
    • (0 reviews)
      # mpn461609442
      Subaru WRX STI 2.5L 2004, 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
    • (0 reviews)
      # mpn470412746
      Subaru WRX / WRX STI 2004, Power Intake Box by APEXi®. When it comes to impeccable design, unsurpassed quality, and great value, Apexi leaves all the rivals far behind. This high-grade Apexi product is a great one to try if you...
      Designed for superior air filtrationProvides virtually unrestricted air flow over the OE
      $206.15
    • (1 review)
      # 377217982
      Subaru WRX 2004, Rockstar® Induction Hose 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
      $201.00
    • (1 review)
      # 377217907
      Subaru WRX 2004, Induction Hose 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 rubber hoses....
      Direct OEM fitManufactured from 100% high-grade silicone and heat-resistant embedded fibers
      $189.00
    • (0 reviews)
      # 377217930
      Subaru WRX 2004, Intake Airbox Hose 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 rubber...
      Direct OEM fitManufactured from 100% high-grade silicone and heat-resistant embedded fibers
      $63.00 - $66.00
    • (0 reviews)
      # 377217856
      Subaru WRX 2004, Intake Airbox by Mishimoto®. Add some additional style and efficiency to your existing Mishimoto Performance Air Intake! This powdercoated, black airbox will divert more cold outside air into your Mishimoto intake!
      Direct OEM fitManufactured from 100% high-quality materials
      $127.26
    • (0 reviews)
      # 377217996
      Subaru WRX 2004, Afta-Maf Intake Tube by PERRIN Performance®. The PERRIN Performance Afta MAF Hose replaces the factory corrugated rubber hose between the inlet tube and air box. This is an awesome part for restoring a high mileage...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $79.20
    • (0 reviews)
      # 377218097
      Subaru WRX 2004, Turbo Air 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...
      Designed to provide increased air flowSS internal support wire for added rigidity and collapse prevention
      $269.10
    • (0 reviews)
      # 446012248
      Subaru WRX / WRX STI 2.0L 2004, Weld-On Intake Adapter by K&N®. Designed utilizing the latest technology, this Weld-on Adapter by K&N features premium quality and will perform better than advertised. Perfect for your vehicle and...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $23.18 - $26.99
    • (0 reviews)
      # 98119685
      Subaru WRX STI 2004, Throttle Body Spacer by Torque Solution®. Torque Solution Throttle Body Spacers are designed to increase Horsepower & Torque. By creating more intake manifold volume along with a better air fuel mixture you...
      19mm thick (3/4")Perfect for those flipping / reversing the intake manifold (also perfect for the Cosworth Manifold)
      $77.45
    • (0 reviews)
      # 377218161
      Subaru WRX 2004, Boost Hose Kit by SamcoSport®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and...
      Longer Life Than OEM Rubber HosesExtreme Durability
      $137.50 - $173.59
    • (0 reviews)
      # 62402790
      Subaru WRX 2004, 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...
      Dramatically Reduces Inlet TempsIncreases Horsepower
      $31.98
    • (0 reviews)
      # 325211263
      Subaru WRX 2004, Thermal Throttle Body Gasket by Blox Racing®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your...
      High quality at an affordable priceExpertly made from premium materials
      $20.00
    • (0 reviews)
      # mpn458193685
      Subaru WRX With Driwe by Cable 2004, Thermal Throttle Body Gasket by Torque Solution®. Thermal Throttle Body Gasket use a proprietary gasket material that lowers intake temps by reducing heat transfer. These gaskets can be used to...
      Installs in MinutesDramatically Reduces Inlet Temps
      $27.41
    • (0 reviews)
      # mpn139315
      Subaru WRX / WRX STI 2004, Air Filter by Beck Arnley®. Position: Primary. For one hundred years, Beck/Arnley has been providing premium OE quality parts for vehicles. Beginning with motorcycle parts in 1914 and transitioning to...
      It is recommended to use factory hardware for installationOE quality products from top original equipment
      $6.65
    • (0 reviews)
      # 504740924
      Subaru WRX 2004, Air Filter by Bosch®. Dirty air filters can cause decreased fuel mileage, increased engine wear, and even problems starting the engine. Check your engine air filter at every oil change and always replace a dirty...
      Protects Your Engine by Stopping 98% of Engine-Threatening ParticlesPrevention of Unfiltered Air Entering Engine Intake with a High-Quality Seal
      $5.41 - $10.10
    • (0 reviews)
      # 86104030
      Subaru WRX 2004, 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 for your vehicle...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $6.96
    • (0 reviews)
      # 85825107
      Subaru WRX 2004, Air Filter by Denso®. 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 waste your...
      OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price
      $4.98
    • (0 reviews)
      # 333621234
      Subaru WRX 2004, Air Filter by Fram®. Do you feel shaking or shuddering when you engage the clutch; hear grinding noise when you shift gears? Does your engine race without an increase in road speed? You’re in need of...
      Quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price
      $9.26 - $28.77
    • (0 reviews)
      # mpn1883188
      Subaru WRX / WRX STI 2.0L 2004, Extra Guard™ Flexible Panel Air Filter by Fram®. Do you feel shaking or shuddering when you engage the clutch; hear grinding noise when you shift gears? Does your engine race without an increase in...
      Quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price
      $5.65
    • (0 reviews)
      # mpn2949957
      Subaru WRX / WRX STI 2004, Air Filter by Full®. 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 manufacturersThe finest quality at a great price
      $6.38
    • (0 reviews)
      # mpn1349341
      Subaru WRX / WRX STI 2.0L 2004, Air Element by Hastings®. Clean air is critical to the performance of your engine, so don’t trust just any filter. Hastings filters are tested according to SAE J726 test procedures, where they meet...
      Filters out dirt and dust in the air preventing them from entering the engineHeavy duty construction for long service life
      $8.48
    • (0 reviews)
      # 85649757
      Subaru WRX 2004, Air Filter by Motorcraft®. Motorcraft is the way to restore the performance of your vehicle. Designed specifically for your vehicle, Motorcraft products meet stringent Ford Motor Company standards and feature OEM...
      OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price
      $6.66
    • (0 reviews)
      # 97528480
      Subaru WRX 2004, 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 foreign...
      Prevents foreign particles like carbon, soot and abrasives from entering the fuel mixEnsures superior engine protection
      $9.17
    • (0 reviews)
      # 320934935
      Subaru WRX 2004, Mass Air Flow Sensor by Delphi®. When it comes to MAF sensors, communication with the ECM is key. That’s why Delphi MAF sensors use all new parts - never remanufactured parts that could harbor debris and...
      Extensive coverageAvailable in a variety of bore diameters to accommodate a wide range of airflow, resulting in a robust design for electrical overloads
      $101.94
    • (0 reviews)
      # 121003898
      Subaru WRX Denso is the OE supplier for this vehicle 2004, 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...
      Glass film coated sensing elements reduces contamination and improves reliabilityPlatinum wire sensing element responds quickly to changes in air flow
      $113.30
    • (0 reviews)
      # 320934938
      Subaru WRX 2004, Air Mass Meter Boot by Genuine®. With Housing. 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,...
      OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price
      $58.34
    • (0 reviews)
      # 381190469
      Subaru WRX 2004, Intermotor™ Manifold Absolute Pressure Sensor by Standard®. SMP’s vision is to be the leading independent supplier to the automotive aftermarket, providing the highest quality products, competitive prices and...
      High quality at an affordable priceExpertly made from premium materials
      $214.39 - $226.42




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    2004 Subaru WRX Performance Air Intake Systems Reviews

    Average rating:  2  2 - 1 review
    2 of 5
    Throttle Body
    It wasn't for my car when you guys said it was.
    RPosted by Roel (New York, NY) / May 16, 2017
    Was this review helpful for you? Yes

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