SET YOUR CAR
FREE SHIPPING
On orders over $99
TALK TO A PARTS EXPERT
RALLYSPORT GUARANTEE
100% Money Back on Select Parts
Product images
Product Media
AMS EJ25 Intake Manifold Reverse Rotation - Subaru Models (inc. 2002-2014 WRX / 2004+ STI)
AMS EJ25 Intake Manifold Reverse Rotation - Subaru Models (inc. 2002-2014 WRX / 2004+ STI)
AMS EJ25 Intake Manifold Reverse Rotation - Subaru Models (inc. 2002-2014 WRX / 2004+ STI)

AMS EJ25 Intake Manifold Reverse Rotation

Subaru Models (inc. 2002-2014 WRX / 2004+ STI)

Write a Review | 4 Q&As
Part # 31.08.0002
$1,163.95

 

Features & Product Details

RallySport Direct proudly carries performance products brought by you by the record holders at AMS Performance. 

Here, you are looking at the AMS Performance EJ25 Reverse Rotation Intake Manifold. This manifold has been designed for those looking for the right intake manifold to accommodate big horsepower setups. AMS utilized computational fluid dynamics software and the result is a larger plenum size of 4.5L for more top-end power, along with CNC machined bellhorns which act as internal velocity stacks which will allow for a broader power curve and high RPM horsepower capabilities. 

FEATURES:

  • Reverse Rotation setup
  • 4.5-liter plenum volume
  • 13" Equal length intake runners measured from the face of bellhorn to end of the runner
  • 2.5" (63.5mm) intake runner diameter
  • Bellhorn OD 3.8" (96.7mm)
  • TGV housing replaced with long runner design
  • Increased port size at cylinder heads allow matching to larger hand ported or CNC ported cylinder heads
  • Throttle body opening accepts larger throttle bodies up to 2.625" (66,675mm) or 70mm with mild porting
  • This version intake manifold is available with a standard orientation
  • Bottom of the center plenum features 4-1/8" and 1-1/4" NPT spots for vacuum accessories
  • Uncoated, textured ted, gold, bronze, black, and blue colors available
  •  

    FITMENT NOTES:

  • NOT BOLT ON, PLEASE READ ALL NOTES BELOW FOR NECESSARY MODIFICATIONS
  • Some port matching of the manifold may be required when used in conjunction with CNC or hand ported cylinder heads
  • Larger throttle bodies can be used with proper modifications (up to 70mm with minor porting, larger throttle bodies may also require adapter flanges)
  • The intake manifold is flanged for 04+ STI drive by wire throttle bodies, other models (such as 08-14 WRX) require a change to the STI style throttle body
  • Cable throttle bodies (such as 02-05 WRX) can be used with custom fitting and flange adapter
  • Standard configuration intercooler piping will need mild custom fabrication due to placement of throttle body
  • Designed to use common Subaru AFTERMARKET top feed injector size (48mm overall length / 11mm inlet-standard Subaru rail size / 14mm outlet)
  • Not compatible with OEM subaru injectors
  • Not compatible with stock fuel rails or lines, requires aftermarket top feed rails and lines
  • Not compatible with top mount intercoolers
  • Not compatible with hard pipe stock location turbo inlets, requires silicone inlet
  • Not directly compatible with mounting the factory upper coolant reservoir
  •  

    Specifications

    Brand: AMS
    Finish: Powder Coated
    Installation Hardware Included: No
    Material: Aluminum
    Mfgr. Warranty: No Warranty
    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

    Be the first to write a review

    QUESTIONS & ANSWERS

    • Q: Reverse manifold   TSUNAMISTI 26 days ago

      I previously asked a question about using your ams manifold in the reverse position, I know the ams reverse manifold doesn't have an upward angle to clear my alternator but the other model appears to have an upward angle that I need to clear the alternator. Any thoughts on fitment? Thank you
      • 1 of 1 people found the following answer helpful

        A:  The reverse rotation intake manifold requires an alternator relocation and A/C delete, it is not a direct bolt in and requires modifications. Trying to modify the standard intake manifold in to a reverse mount would also require modification. We have not done any fitment testing.

        Lane H. @ RallySport Direct 11 days ago  
          
        Was this answer helpful?
    • Q: Reverse manifold fitment   TSUNAMISTI 2 months ago

      I currently run the stock subaru sti manifold reversed with the alternator in its lowest location and with a 19mm spacer under the manifold. The stock manifold throttle body is angled upwards allowing it to clear the alternator. Does your reverse manifold throttle body inlet have a similar upward angle? 2013 subaru wrx sti. Thank you
    • Q: Stock head fitment   Jacob4 months ago

      Do the heads need to be CNC ported to fit this manifold or does it come ported specifically for stock heads?
    • Q: 2017 Wrx  Nick5 months ago

      Will this manifold fit on a 2017 wrx?

    This Part Fits

    Subaru Impreza
    WRX
    2002 Subaru Impreza WRX
    2003 Subaru Impreza WRX
    2004 Subaru Impreza WRX
    2005 Subaru Impreza WRX
    2006 Subaru Impreza WRX
    2007 Subaru Impreza WRX
    WRX Hatchback
    2008 Subaru Impreza WRX Hatchback
    2009 Subaru Impreza WRX Hatchback
    2010 Subaru Impreza WRX Hatchback
    2011 Subaru Impreza WRX Hatchback
    2012 Subaru Impreza WRX Hatchback
    2013 Subaru Impreza WRX Hatchback
    2014 Subaru Impreza WRX Hatchback
    WRX Limited
    2006 Subaru Impreza WRX Limited
    2007 Subaru Impreza WRX Limited
    WRX Limited Hatchback
    2010 Subaru Impreza WRX Limited Hatchback
    2011 Subaru Impreza WRX Limited Hatchback
    2012 Subaru Impreza WRX Limited Hatchback
    2013 Subaru Impreza WRX Limited Hatchback
    2014 Subaru Impreza WRX Limited Hatchback
    WRX Limited Sedan
    2010 Subaru Impreza WRX Limited Sedan
    2011 Subaru Impreza WRX Limited Sedan
    2012 Subaru Impreza WRX Limited Sedan
    2013 Subaru Impreza WRX Limited Sedan
    2014 Subaru Impreza WRX Limited Sedan
    WRX Premium Hatchback
    2010 Subaru Impreza WRX Premium Hatchback
    2011 Subaru Impreza WRX Premium Hatchback
    2012 Subaru Impreza WRX Premium Hatchback
    2013 Subaru Impreza WRX Premium Hatchback
    2014 Subaru Impreza WRX Premium Hatchback
    WRX Premium Sedan
    2010 Subaru Impreza WRX Premium Sedan
    2011 Subaru Impreza WRX Premium Sedan
    2012 Subaru Impreza WRX Premium Sedan
    2013 Subaru Impreza WRX Premium Sedan
    2014 Subaru Impreza WRX Premium Sedan
    WRX STI
    2004 Subaru Impreza WRX STI
    2005 Subaru Impreza WRX STI
    2006 Subaru Impreza WRX STI
    2007 Subaru Impreza WRX STI
    WRX STI Hatchback
    2008 Subaru Impreza WRX STI Hatchback
    2009 Subaru Impreza WRX STI Hatchback
    2010 Subaru Impreza WRX STI Hatchback
    2011 Subaru Impreza WRX STI Hatchback
    2012 Subaru Impreza WRX STI Hatchback
    2013 Subaru Impreza WRX STI Hatchback
    2014 Subaru Impreza WRX STI Hatchback
    WRX STI Limited
    2007 Subaru Impreza WRX STI Limited
    WRX STI Limited Hatchback
    2011 Subaru Impreza WRX STI Limited Hatchback
    2012 Subaru Impreza WRX STI Limited Hatchback
    2013 Subaru Impreza WRX STI Limited Hatchback
    2014 Subaru Impreza WRX STI Limited Hatchback
    WRX STI Limited Sedan
    2011 Subaru Impreza WRX STI Limited Sedan
    2012 Subaru Impreza WRX STI Limited Sedan
    2013 Subaru Impreza WRX STI Limited Sedan
    2014 Subaru Impreza WRX STI Limited Sedan
    WRX STI Sedan
    2011 Subaru Impreza WRX STI Sedan
    2012 Subaru Impreza WRX STI Sedan
    2013 Subaru Impreza WRX STI Sedan
    2014 Subaru Impreza WRX STI Sedan
    WRX STI Special Edition Hatchback
    2010 Subaru Impreza WRX STI Special Edition Hatchback
    WRX Sedan
    2008 Subaru Impreza WRX Sedan
    2009 Subaru Impreza WRX Sedan
    2010 Subaru Impreza WRX Sedan
    2011 Subaru Impreza WRX Sedan
    2012 Subaru Impreza WRX Sedan
    2013 Subaru Impreza WRX Sedan
    2014 Subaru Impreza WRX Sedan
    WRX TR
    2006 Subaru Impreza WRX TR
    2007 Subaru Impreza WRX TR