2004 Subaru WRX Air Intake Parts

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    • (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
      $9.82
    • (0 reviews)
      # 146001902
      Subaru WRX / WRX STI 2.0L 2004, Extra Guard™ Flexible Panel Air Filter by FRAM®. Size: 11.11" (L) x 6.56" (W) x 1.28" (H). Do you feel shaking or shuddering when you engage the clutch; hear grinding noise when you shift gears?...
      Quality parts from top original equipment and aftermarket manufacturersFast shipping; 1-2 day delivery time regardless of where you’re located
      $9.24
    • (0 reviews)
      # 35806055
      Subaru WRX / WRX STI 2004, Air Filter by Beck Arnley®. 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 import...
      It is recommended to use factory hardware for installationOE quality products from top original equipment
      $9.39
    • (0 reviews)
      # 85825107
      Subaru WRX 2004, Air Filter, FTF Air Filter 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 engineering and...
      High airflow rate improves performance and fuel economySuperior dust holding capacity increases filter life
      $8.26
    • (0 reviews)
      # 8021766
      Subaru WRX / WRX STI 2004, Air Filter by Full®. Production: 03/31/2004. 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...
      OE quality parts from top original equipment and aftermarket manufacturersFast shipping; 1-2 day delivery time regardless of where you’re located
      $10.14
    • (0 reviews)
      # 21456343
      Subaru WRX 2004, Panel 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 or...
      Filters out dirt and dust in the air preventing them from entering the engineHeavy duty construction for long service life
      $12.42
    • (0 reviews)
      # 85649757
      Subaru WRX 2004, Air Filter by Motorcraft®. The air filter is a simple yet crucial part of your vehicle that keeps dust and road debris out of the engine. If the air filter is clogged up and starts to choke off the airflow to your...
      Direct OEM replacement for proper fitRecommended by Ford Motor Company
      $9.03
    • (0 reviews)
      # 7806462
      Subaru WRX / WRX STI 2004, Air Filter by Purolator®. Production: 03/31/2004. 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...
      OE quality parts from top original equipment and aftermarket manufacturersFast shipping; 1-2 day delivery time regardless of where you’re located
      $12.30
    • (0 reviews)
      # 97528480
      Subaru WRX Canada-Built 2004, Air Filter Panel by WIX®. Height: 1.380". Inner Diameter Top: Closed. Length: 11.070". MediaType: Enhanced Cellulose. Style: Air Filter Panel. Considering as much as 10,000 gallons of air must pass...
      Prevents foreign particles like carbon, soot and abrasives from entering the fuel mixEnsures superior engine protection
      $13.26
    • (0 reviews)
      # 97528483
      Subaru WRX Canada-Built 2004, PRO-TEC™ Air Filter Panel by WIX®. Height: 1.380". Inner Diameter Top: Closed. Length: 11.070". Style: Air Filter Panel. Considering as much as 10,000 gallons of air must pass through the air filter...
      Maximum efficiency reduces engine wearNine pleats per inch
      $4.43
    • (0 reviews)
      # 93509891
      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
      $111.54
    • (0 reviews)
      # 133396527
      Subaru WRX 2004, Idle Control Valve by Genuine®. Is your vehicle hard to start? Does its stumble and stall, and idle rough? Are you making more frequent visits to the pump? Your fuel system may need repair, but before you waste...
      OE quality parts from top original equipment and aftermarket manufacturersFast shipping; 1-2 day delivery time regardless of where you’re located
      $346.96
    • (0 reviews)
      # 121003898
      Subaru WRX 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 time. With OE-quality engineering and...
      Glass film coated sensing elements reduces contamination and improves reliabilityPlatinum wire sensing element responds quickly to changes in air flow
      $132.84
    • (0 reviews)
      # 44711892
      Subaru WRX / WRX STI 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...
      OE quality parts from top original equipment and aftermarket manufacturersFast shipping; 1-2 day delivery time regardless of where you’re located
      $68.53
    • (0 reviews)
      # 98119304
      Subaru WRX STI 2004, MAF Block-off Plate by Torque Solution®. Torque Solution Maf Block Off plates were designed to seal off the intake system. This makes for an easy transition to Speed Density tuning once plugged up. Guaranteed...
      6061 Billet AluminumO-ringed for perfect seal
      $43.38
    • (0 reviews)
      # 36225346
      Subaru WRX / WRX STI 2.0L 2004, Fuel Injection Throttle Body Mounting Gasket by Beck Arnley®. For one hundred years, Beck/Arnley has been providing premium OE quality parts for vehicles. Beginning with motorcycle parts in 1914 and...
      OE quality products from top original equipmentTop quality materials
      $6.44
    • (0 reviews)
      # 8827500
      Subaru WRX 2004, Throttle Position Sensor by Genuine®. Is your vehicle hard to start? Does its stumble and stall, and idle rough? Are you making more frequent visits to the pump? Your fuel system may need repair, 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
      $134.46
    • (0 reviews)
      # 88047511
      Subaru WRX 2004, Throttle Position Sensor by Genuine®. Is your vehicle hard to start? Does its stumble and stall, and idle rough? Are you making more frequent visits to the pump? Your fuel system may need repair, 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
      $134.46
    • (0 reviews)
      # 8715723
      Subaru WRX STI 2.5L 2004, Throttle Body Gasket by Nippon Reinz®. Is your vehicle hard to start? Does its stumble and stall, and idle rough? Are you making more frequent visits to the pump? Your fuel system may need repair, but...
      OE quality parts from top original equipment and aftermarket manufacturersFast shipping; 1-2 day delivery time regardless of where you’re located
      $5.22
    • (0 reviews)
      # 90734964
      Subaru WRX 2004, Fuel Injection Throttle Body Mounting Gasket by Victor Reinz®, Use 1 per Car. OEM Standard. Material: Paper. When you’re low on oil, coolant or some other fluid, you may be tempted to just run down to the local...
      OE quality fluids from top original equipment and aftermarket manufacturersFast shipping; 1-2 day delivery time regardless of where you’re located
      $5.92 - $6.62
    • (0 reviews)
      # 35812557
      Subaru WRX / WRX STI 2004, Intake Manifold Gasket by Beck Arnley®. For one hundred years, Beck/Arnley has been providing premium OE quality parts for vehicles. Beginning with motorcycle parts in 1914 and transitioning to import...
      OE quality products from top original equipmentTop quality materials
      $6.84
    • (0 reviews)
      # 93496715
      Subaru WRX 2004, Upper Intake Manifold Gasket Set by Fel-Pro®. If you need durable gaskets to prevent leaks on your vehicle, Fel-Pro is the way to go. Engineered using the latest technologies and global engineering resources, the...
      Direct OEM replacement for a proper fitEnsure reliable sealing performance
      $29.13
    • (0 reviews)
      # 8714810
      Subaru WRX / WRX STI 2004, Intake Manifold Gasket by Nippon Reinz®. To Cylinder Head. Is your vehicle feeling down on power? Do you see dark puddles on the ground when you park? Is your CHECK ENGINE light on? Your engine may be in...
      $7.78
    • (0 reviews)
      # 158125047
      Subaru WRX 2004, Intake Manifold Gasket Set by DNJ Engine Components®. Includes: Intake Gasket. Get this top-grade quality replacement for your worn out part from DNJ. Expertly crafted from premium materials, this product is of the...
      Designed to restore your vehicle's original performanceProvides superior sealing performance
      $14.16 - $24.67
    • (0 reviews)
      # 55968644
      Subaru WRX 2004, Metal Cold Air Intake System by AEM®. Tube Material: Metal. 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...
      Delivers more oxygen to the combustion chamber by drawing in cooler airCustom designed and engineered to deliver maximum power for each specific vehicle
      $268.99 - $300.99
    • (0 reviews)
      # 55968640
      Subaru WRX / WRX STI 2004, Metal Short Ram Air Intake System by AEM®. Replacement Filter # 21-202DK. Use with Pre-Filter # 1-4000. Includes: 4 Hose Clamps. Tube Material: Metal. Estimated Horsepower Gain: 11.77 HP @ 4095 RPM. This...
      Delivers increased performance for less costEasily installs under the hood
      $175.99 - $186.99
    • (1 review)
      # 103805836
      Subaru WRX 2004, Magnum Force Stage 2 Intake System by aFe®. Includes: Air Filter, 1-Piece Black Powdercoat Heat Shield, Heat Insulating Roto-Molded Tube. The aFe Stage 2 Cold Air Intake System replaces your entire factory air...
      Improves airflow to your engineIsolates the air filter from engine heat, enabling it to take in cooler, denser air
      $325.00
    • (0 reviews)
      # 79118421
      Subaru WRX / WRX STI 2004, Power Intake Kit by APEXi®. Air Filter Color: Red. System Type: Ram Air Intakes. When it comes to impeccable design, unsurpassed quality, and great value, Apexi leaves all the rivals far behind. This...
      Designed for superior air filtrationProvides virtually unrestricted air flow over the OE
      $177.31
    • (0 reviews)
      # 93466862
      Subaru WRX 2004, Cold Air Box Kit by AVO®.
      $155.00
    • (0 reviews)
      # 98829078
      Subaru WRX / WRX STI 2004, IS Series Short Ram Polished Intake System by Injen®. HP Gain: +10 hp. Includes: X-1014 Filter. The IS Series is a traditional, underhood air intake system that takes the place of your factory airbox and...
      Improves airflow into the engineIncreases horsepower
      $182.12
    • (0 reviews)
      # 360140
      Subaru WRX / WRX STI Sedan 2004, RD Series Cold Air Intake System by Injen®. HP Gain: +24.4 hp. Includes: X-1013 Filter. The RD Series is made for the enthusiast who wants improved mid-range power. 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
      $278.38
    • (0 reviews)
      # 360451
      Subaru WRX STI 2.5L 2004, SP Series Cold Air Intake System by Injen®. HP Gain: +25.23 hp. Torque Gain: +22.63 lbs. x ft. Includes: X-1013 Filter. The SP Series Cold Air Intake System is made for the enthusiast who wants maximum...
      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
    • (0 reviews)
      # 73903621
      Subaru WRX 2004, 57i Series Generation I Aluminum Black Air Intake System with Intake Pipe by K&N®. Replacement Filter # RC-70031. Air Filter Height: 6.344" (161 mm). Air Filter Material: Cotton Gauze. Air Filter Material: Cotton...
      Guaranteed to increase horsepowerSpecifically designed for each application
      $166.99
    • (0 reviews)
      # 73903639
      Subaru WRX 2004, 69 Series Typhoon Cold Air Intake System by K&N®. Replacement Filter # RP-5113. Use with Pre-Filter # RU-5147DK. Air Filter Height: 5.625" (143 mm). Air Filter Large End Diameter: 6.5" (165 mm). Air Filter...
      Guaranteed to increase horsepower and improve accelerationCustom designed and engineered for each application
      $289.99 - $291.99
    • (0 reviews)
      # 103805850
      Subaru WRX 2004, Retain Short Ram Stage 2 Polished Intake System by Takeda®. Filter Series: Pro Dry S. HP Gain: +15 hp. TQ Gain: +32 lbs. x ft. Includes: Air Filter, Polished Aluminum Tubing, Couplers, Clamps, Hardware,. Improve...
      Custom designed for each applicationIncreases airflow, for gains in horsepower and torque
      $325.00
    • (0 reviews)
      # 284476
      Subaru WRX 2004, Dragon Air Intake System by Weapon-R®. Pipe Finish: Polished. 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 of...
      Custom designed and engineered for each applicationEach system is tuned to maximize engine performance output
      $177.65 - $182.65
    • (0 reviews)
      # 100729161
      Subaru WRX 2004, Secret Weapon Air Intake System by Weapon-R®. Pipe Finish: Polished. Filter Cage Finish: Gunmetal. Foam Filter Finish: Black. The Secret Weapon Air Intake System uses patented technology to feed the engine 3 times...
      Patented technology increases airflow 3 times more than conventional systemsEach system is tuned to maximize engine performance output
      $220.15
    • (0 reviews)
      # 137974985
      Subaru WRX 2004, Secret Weapon Neo-Ti Air Intake System by Weapon-R®. Pipe Finish: Neo Ti. Filter Cage Finish: Gunmetal. Foam Filter Finish: Black. The Secret Weapon Air Intake System uses patented technology to feed the engine 3...
      Patented technology increases airflow 3 times more than conventional systemsEach system is tuned to maximize engine performance output
      $289.00
    • (0 reviews)
      # 73693745
      Subaru WRX 2004, Cold Air Intake 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 proper...
      Perfect cold air bathAdd 5 wheel HP to your car
      $333.00 - $360.00
    • (0 reviews)
      # 73693729
      Subaru WRX 2004, Big MAF Short Ram Black Air Intake 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...
      Precision CNC construction for perfect fitThroaty deep tone sound
      $199.80 - $226.80
    • (0 reviews)
      # 70887875
      Subaru WRX 2004, Racing Suction Reloaded Kit by HKS®. Color: Yellow. Element Size: 200 mm. Inlet Size: 80 mm. Included in each kit is HKS Reloaded filter with its patented Super-Funnel and new technical advances: Filter cage allows...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $280.84
    • (0 reviews)
      # 70194021
      Subaru WRX / WRX STI 2004, Super Power Flow Reloaded Kit by HKS®. Back Plate Color: Black. Element Size: 200 mm. Inlet Size: 80 mm. Ambient exposure type air cleaner has larger area of induction inlet that increases intake air...
      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.
      $140.42
    • (0 reviews)
      # 15847825
      Subaru WRX STI 2004, Red Short Ram 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 high-flow air filter...
      Delivers more oxygen to the combustion chamber by drawing in cooler airCustom designed and engineered to deliver maximum power for each specific vehicle
      $175.00
    • (0 reviews)
      # 73693080
      Subaru WRX STI 2.5L 2004, 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
    • (0 reviews)
      # 57164929
      Subaru WRX 2004, Mass Air Flow Sensor by Spectra Premium®. Material: Plastic. Includes Sensor only. Spectra Premium’s complete line of new Mass Air Flow Sensors, featuring Ceramic PC boards to ensure premium performance and...
      Provide more consistent voltage to eliminate engine rough idle problemsPlatinum connector threads reduce the number of connection points for faster reaction to change
      $87.70
    • (1 review)
      # 919185
      Subaru WRX 2004, Magnum Flow Pro 5R Panel Air Filter by aFe®. This Pro 5R air filter provides performance filtration and maximum convenience. Constructed with 100% polyurethane on all sides, this high flow cotton gauze OE...
      Deep Cotton Pleats for Increased FlowFits In Factory Housing
      $62.95
    • (0 reviews)
      # 922042
      Subaru WRX 2004, Magnum Flow Pro Dry S Panel Air Filter by aFe®. Constructed with 100% polyurethane on all four sides, this high flow "oil-free" OE replacement performance filter will outflow stock paper filter for improved...
      For Improved Horsepower And TorqueLimited Lifetime Warranty
      $73.95
    • (1 review)
      # 120886223
      Subaru WRX 2004, SynthaMax® Panel Red Air Filter by AIRAID®. Filter Material: Non-woven Synthetic. Quantity: Sold individually. Includes: 1 Air Filter. Advanced air filtration technology, superior construction and the world's best...
      Improves airflow and engine performanceProvides superior air filtration and engine protection
      $62.11
    • (0 reviews)
      # 79118301
      Subaru WRX / WRX STI 2004, Power Intake Panel Filter by APEXi®. Air Filter Color: Red. Air Filter Shape: Panel. Some manufacturers of performance air filters make aggressive claims about their filter's ability to make power, but...
      Progressive-density filter element improves power and efficiency, without compromising ability to filter dust and dirtDry-type filter element requires no oiling, and will not foul air flow sensors
      $35.81
    • (0 reviews)
      # 93466866
      Subaru WRX 2004, Hi-flow Panel Air Filter by AVO®.
      $49.00
    • (0 reviews)
      # 93466874
      Subaru WRX 2004, Power Air Filter Kit by AVO®.
      $190.00
    • (0 reviews)
      # 160892068
      Subaru WRX 2004, Panel 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 and...
      Designed for the ultimate in performanceMade from premium materials
      $30.60
    • (0 reviews)
      # 56295892
      Subaru WRX except Turbocharged 2004, 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...
      Cleanable, reusable filter element will outlast your carTraps particles as small as 5 microns
      $48.35
    • (0 reviews)
      # 107669881
      Subaru WRX 2004, 33 Series Panel Air Filter by K&N®. Air Filter Color: Red. Filter Material: Cotton Gauze. Filter Re-Oiling Amount: 1.05 oz (31 ml). Height: 1.063" (27 mm). Outside Length: 11" (279 mm). Outside Width: 6.563" (167...
      Improves engine airflowIncreases horsepower and acceleration
      $49.99
    • (1 review)
      # 118600994
      Subaru WRX 2004, HPR™ Panel Air Filter by Spectre Performance®. Air Filter Color: Red. Filter Material: Non-woven Synthetic. Height: 1.313" (33 mm). Oil Amount: 40 ml (1 oz). Outside Length: 11" (279 mm). Outside Width: 6.5" (165...
      High performance and high air flow filterFilter media is non-woven synthetic and pre-dyed
      $17.03
    • (0 reviews)
      # 84938464
      Subaru WRX 2004, 3.125" Foam Type 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...
      Two-piece design for easy cleaningOpen cell foam element
      $62.10
    • (0 reviews)
      # 74187514
      Subaru WRX 2004, 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. A stealthy...
      Open cell foam elementCleaner for efficient and trouble-free cleanup
      $43.20
    • (0 reviews)
      # 70194020
      Subaru WRX / WRX STI 2004, 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.
      $30.63
    • (0 reviews)
      # 141087685
      Subaru WRX 2004, Cotton Cleanable 8-ply Air Filter by S&B®. All S&B air filters maintain high air flow characteristics designed to increase horsepower and acceleration. Each filter S&B produces is manufactured to the highest...
      High quality at an affordable priceExpertly made from premium materials
      $33.05
    • (0 reviews)
      # 79118433
      Subaru WRX / WRX STI 2004, Aluminum Induction 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...
      Designed for superior air filtrationProvides virtually unrestricted air flow over the OE
      $202.11




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    2004 Subaru WRX Air Intake Parts Reviews

    Average rating:  5  5 - 1 review
    5 of 5
    Spectre Performance Replacement Air Filter
    The product appears to be well made.
    APosted by Alex (Milwaukee, WI) /
    2006 Saab 9-2
    Was this review helpful for you? Yes1  person found this review helpful.
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