SET YOUR CAR
FREE SHIPPING
On orders over $100
TALK TO A PARTS EXPERT
RALLYSPORT GUARANTEE
100% Money Back on Select Parts
Product images
Product Media
Cosworth High Volume Intake Manifold (Part Number: )
Cosworth High Volume Intake Manifold (Part Number: )
Cosworth High Volume Intake Manifold (Part Number: )
Cosworth High Volume Intake Manifold (Part Number: )
Cosworth High Volume Intake Manifold (Part Number: )
Cosworth High Volume Intake Manifold (Part Number: )
Cosworth High Volume Intake Manifold (Part Number: )
Cosworth High Volume Intake Manifold (Part Number: )
Cosworth High Volume Intake Manifold (Part Number: )
Community Media
Cosworth High Volume Intake Manifold (Part Number: )
Cosworth High Volume Intake Manifold (Part Number: )
Cosworth High Volume Intake Manifold (Part Number: )
Cosworth High Volume Intake Manifold (Part Number: )
Cosworth High Volume Intake Manifold
Subaru STI 2004+

Features & Product Details

RallySport Direct proudly carries a great selection of automotive performance products brought to you by Cosworth. With over 50 years worth of racing heritage in Formula One among other forms of motorsport, Cosworth continues to engineer and develop quality performance products to improve your driving experience for street use or motorsport. 

On this page, you are looking at the Cosworth High Volume Intake Manifold.

Here are the details:

  • Flows an average of 421.25 CFM per runner
  • 13.5% increase over stock
  • Gains up to +15HP above 6000 RPM with no sacrifices in response or low-end torque on a stock engine
  • Substantially increased plenum volume
  • large tapered runners with radiused inlets
  • Tuned plenum volume and runner length/taper
  • Over 10% increase in flow
  • Integral vacuum manifold for connection of brake booster, boost gauge, MAP sensor, or boost controller
  • Will work with standard or forward-mount throttle bodies
  • Ideal for those with a front mount intercooler
  • Note:

  • Will not work with the stock TMIC setup
  • Requires the use of OEM or other TGV's
  • Will work on 04-18 STI models (throttle by wire)
  • Specifications

    Brand: Cosworth
    Finish: Raw
    Installation Hardware Included: Yes
    Material: Aluminum
    Mfgr. Warranty: 1 year
    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.
    Standard

    PEOPLE WHO VIEWED THIS ITEM ALSO VIEWED

    REVIEWS & CUSTOMER MEDIA

    4 Reviews
    5 out of 5 Stars
    5 Stars
    (4)
    4 Stars
    (0)
    3 Stars
    (0)
    2 Stars
    (0)
    1 Stars
    (0)
    Customer Photos and Videos
    Cosworth High Volume Intake Manifold ( Part Number: 20006438)
    Cosworth High Volume Intake Manifold ( Part Number: 20006438)
    Cosworth High Volume Intake Manifold ( Part Number: 20006438)
    Cosworth High Volume Intake Manifold ( Part Number: 20006438)
    2 of 2 people found the following review helpful
    Amazing Product 3 years ago
    5out of 5stars

    We are running this Intake Manifold on our 2015 STI. Not only does it give us some nice power gains especially with our large GT38R Turbo, but it fits and looks amazing.
      
    Was this review helpful?
    1 of 1 people found the following review helpful
    Cosworth Bling 5 years ago
    5out of 5stars

    Just a wonderful looking intake manifold. I made great power too, I have an 07 sti with a Perrin GTX 3076r turbo kit rotated mount.
      
    Was this review helpful?
    1 of 1 people found the following review helpful
    Love my Cosi Manifold 7 years ago
    5out of 5stars

    After making an adaptor plate for the t-body I was able to make this fit my 04STi. I love my Cosi Manifold. Looks hot and sexy. Still need to tune the car to get 100% performance out of it. Thanks Rally Sports Direct for speedy service and delivery.
      
    Was this review helpful?
    Nice bit of kit. 7 years ago
    5out of 5stars

    Have this on my 2011 STi. Manifold has a coating on it that seems to keep some of the heat out. Vaccum plate can be rotated if you are running a rotated intake manifold making running hoses a little easier. Lots of ports for your FPR, gauges, etc. My small GT3076R seems to spool a little bit later, but makes big power (470 wtq @ 4250 / 442 hp ) I think this part will help out much more when I go to a GT35 or 40 series turbo. Had too many parts change (TGV Delete, larger injectors, new/better tune) when I installed this to provide a good before/after dyno plot.
      
    Was this review helpful?

    QUESTIONS & ANSWERS

    • Q: can this be used with a hard turbo inlet.  Wreakloose1 month ago

      I have an Agency power turbo inlet I am using and I would be running a fmic however I wanted to know will this intake manifold fit over a rigid turbo inlet pipe in the stock position?
    • Q: Advantage   Lapissti1 year ago

      What is the advantage of a high volume intake mainfold compared to the stock one?
      • 0 of 0 people found the following answer helpful

        A:  Increased air flow, which correlates to higher HP. Also you can flip this intake manifold to be both stock location mounting and reverse.

        Tyler A. @ RallySport Direct 1 year ago  
          
        Was this answer helpful?
    • Q:  High-volume intake  billyargento012831 year ago

      Does this intake manifold from cosworth work with Process West Black Top Mount Intercooler - Subaru STI Or go whit the process West ?

    This Part Fits