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AEM Cold Air Intake System - Subaru STI 2019+
AEM Cold Air Intake System - Subaru STI 2019+
AEM Cold Air Intake System - Subaru STI 2019+

AEM Cold Air Intake System

Subaru STI 2019+

Write a Review | 4 Q&As
Part # 21-863WR

In stock!
Ships today if ordered in
1 hrs 17 mins

Features & Product Details

RallySport Direct is proud to provide you with another quality performance intake system brought to you by AEM.

On this page, you are looking at the AEM Cold Air Intake System designed specifically for your application to replace the factory restrictive intake system to increase both power and performance. This is a complete kit that replaces your factory air filter and air intake housing and has been dyno-proven to produce more power and torque.




  • Tuned and dyno-tested to improve acceleration and engine sound
  • Low restriction aluminum intake pipe
  • Intake pipe will come powder-coated a wrinkle red color
  • Air filter can last up to 100,000 miles before cleaning is required
  • Air filter is washable and reusable
  • Increased horsepower
  • Improved throttle response
  • Improved torque
  • Reduced turbo lag
  • Increased intake sound
  • Includes heat shield
  • Includes new clamps
  • Specifications

    Brand: AEM
    Carb Exempt: [

    Carb Restricted Shipping

    If an Item is CARB exempt it means that it has undergone an engineering evaluation by CARB (California Air Recourses Board) and is shown to not increase vehicle emissions. If an item is CARB Exempt it will have an EO (Executive Order) number associated with it. Even if an item has an EO number it is not guaranteed to be CARB exempt for your vehicle. It is important to confirm that your Year Make and Model fall under the CARB EO number associated with the part. That can be confirmed either by checking the CARB website or the manufacturers website.
    ? ]
    Filter Color: Red
    Filter Element Type: Dry
    Filter Material: Cotton
    Filter Reusable: Yes
    Includes Airbox: Yes
    Piping Color: Red
    Piping Material: Aluminum
    Tuning Required: No, but recommended
    Mfgr. Warranty: Limited Lifetime
    Condition: New Product
    Return Policy:

    RallySport Guarantee - 30 Days

    Items that are covered under the RallySport Guarantee offer a 30 day no questions asked return policy.

    RallySport Guarantee items may be returned within 30 days of the original invoice date and must include all the original parts and contents for a refund.

    The RallySport Guarantee does not apply to products that have been modified, damaged, misused or abused. All returns require an RMA (Return Merchandise Authorization) Number, and freight charges are strictly non-refundable. For more information regarding our freight refund policy, please refer to our return policy page found HERE.
    WARNING: Cancer and Reproductive Harm -



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    • Q: MAF  silver19STI22 days ago

      does this system have a mass air flow sensor location and you just cant see it in the pictures? or would I have to run with no MAF?
    • Q: Fitment  Aaron S6 months ago

      Will this fit front mount setups if you don’t use the heat shield?
      • 0 of 0 people found the following answer helpful

        A:  We have not tested to confirm and I'm not able to find anyone using this intake with a front mount. We can't say for certain, but chances are your FMIC manufacturer also sells an intake that would work.

        Lane H. @ RallySport Direct 1 month ago  
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    • Q: AEM Cold Air  CHouck 1 year ago

      Any change from 19-20 that wouldn’t make this work?
    • Q: AEM Cold Air Intake  JD1 year ago

      Hi, Is there a difference between the Subaru Sit 2018 and 2019 AEM Cold air intake system?
      • 1 of 1 people found the following answer helpful

        A:  Yes I believe that there is a slight difference in the intake design

        Tylo R @ RallySport Direct
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      • 0 of 0 people found the following answer helpful

        A:  I tried to fit the 2018 Cold Air on my '19. The front air duct doesnt fit, and the heatshield has to be kinda warped to fit and comes in contact with the maf pipe.

        Was this answer helpful?