2004 Subaru WRX Air Intakes

    • Spectre Performance® - AccuCharge Precision Air Filter Oiling System™
      Universal AccuCharge Precision Air Filter Oiling System™ 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!...
      Our price: $10.02$10.02
      20% OFF
      (0)
    • Takeda® - Restore Kit
      Restore Kit by Takeda®. Keep your Takeda performance air filter in top shape with the Restore Kit. The kit includes everything you need to thoroughly clean your air filter and put it back to like new condition.
      Our price: $19.95$19.95
      20% OFF
      (0)
    • GREEN FILTER® - Cleaning Kit
      Cleaning Kit by Green Filter®. Clean and recharge your Green Filter aircleaner element with these products. The air filter cleaner makes the dirt and filter oil rinse off easily, while the spray bottle of air filter oil wicks into the filter...
      Our price: $7.92 - $28.16$7.92
      20% OFF
      (1)
    • BULLY DOG® - RFI Intake Cleaning Kit
      RFI Intake Cleaning Kit by Bully Dog®. Keep your Filter Clean, Keep your engine happy. Cleaning kit includes everything needed for regular filter maintenance. Keeping your filter clean is key to maintaining performance. The oil style filter...
      Our price: $17.20$17.20
      20% OFF
      (0)
    • Weapon-R® - Mass Air Flow Adapter
      Subaru 3.0L 1995-2004, Mass Air Flow Adapter by Weapon-R®, 3" Inlet. This universal adapter will let you attach that air cleaner of your choice to the inlet of your airflow sensor. Made from rugged plastic, it bolts to flat inlet of the sensor,...
      Our price: $13.00$13.00
      20% OFF
      (0)
    • FRAM® - Tough Guard™ Panel Air Filter
      Subaru WRX 2.0L 2004, Tough Guard™ Panel Air Filter by FRAM®. This premium air filter is engineered to meet extreme driving conditions. It features a pre-oiled filter media for increased dirt holding capacity and a heavier filter screen to...
      Our price: $13.33$13.33
      20% OFF
      (0)
    • FRAM® - Extra Guard™ Panel Air Filter
      Subaru WRX 2004, Extra Guard™ Panel Air Filter by FRAM®. Most dirt and dust enters the engine through the air filter and FRAM Extra Guard is engineered to provide twice the air filtration compared to an original filter. It also keeps the engine...
      Our price: $8.54 - $9.09$8.54
      20% OFF
      (0)
    • Full® - Air Filter
      Subaru WRX 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 waste your time and gas,...
      Our price: $9.99$9.99
      20% OFF
      (0)
    • Hastings® - Air Filter
      Subaru WRX 2.5L 2004, Air Filter 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 exceed the exacting...
      Our price: $14.15$14.15
      20% OFF
      (0)
    • Kinsen® - Air Filter
      Subaru WRX 2004, Air Filter by Kinsen®. 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 time and gas,...
      Our price: $11.47$11.47
      20% OFF
      (0)
    • MANN-Filter® - Air Filter
      Subaru WRX 2004, Air Filter by MANN-Filter®. Get excellent engine protection and more economical operation just by replacing your air filter. This MANN air filter is specially designed for your vehicle to ensure a precise fit and proper...
      Our price: $7.34$7.34
      20% OFF
      (0)
    • Motorcraft® - Air Filter
      Subaru WRX / WRX STI 2004, Air Filter by Motorcraft®. Type: 159. 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...
      Our price: $18.49$18.49
      20% OFF
      (0)
    • NPN® - Air Filter
      Subaru WRX 2004, Air Filter by NPN®. 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 time and gas,...
      Our price: $6.81$6.81
      20% OFF
      (0)
    • Purolator® - Air Filter
      Subaru WRX 2004, Air Filter by Purolator®. 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 time and...
      Our price: $11.80$11.80
      20% OFF
      (0)
    • Denso® - Air Filter
      Subaru WRX 2004, Air Filter - Panel Type by Denso®, 1 Piece. 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 materials,...
      Our price: $14.02$14.02
      20% OFF
      (0)
    • Denso® - Mass Air Flow Sensor
      Subaru WRX / WRX STI 2004, Mass Air Flow Sensor by Denso®, 1 Piece. 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...
      Our price: $126.09$126.09
      20% OFF
      (0)
    • Delphi® - Mass Air Flow Sensor
      Subaru WRX 2004, Mass Air Flow Sensor by Delphi®. Delphi MAF sensors provide the engine control module (ECM) with continuous information regarding how much — and how fast — air is entering the engine. This ensures optimal engine performance,...
      Our price: $102.61$102.61
      20% OFF
      (0)
    • Genuine® - New Air Mass Meter
      Subaru WRX 2004, New Air Mass Meter by Genuine®. 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 time...
      Our price: $259.56$259.56
      20% OFF
      (0)
    • JET® - Mass Air Flow Sensor
      Subaru WRX 2004, Mass Air Flow Sensor by JET®. Powr-Flo; Mass Air Sensor.
      Our price: $149.96$149.96
      20% OFF
      (0)




    2004 Subaru WRX Air Intakes Reviews
    Average rating:43.8 - 1 reviews
    4(3.8)
    APPEARANCE8
    EASE OF INSTALLATION8
    PRICE/VALUE6
    QUALITY8
    Injen CAI Review for 2008+ STi
    2008 Subaru WRX
    | Posted by | (El Paso, TX)

    Installation was a breeze, well documented instructions. Obviously a re-tune of the ECU is needed to see any real benefits.

    4 people found this review helpful.
    Was this review helpful for you? YesNo
    Share this review:
    In 2004 Subaru WRX was available in the following models:
    WRX • WRX STI