Cosworth Top Feed Fuel Rail Kit

Part #: COS1 20026741
( 2 reviews )



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Brand: Cosworth
Fuel Lines Included: No
Injector Type: Top Feed
Rail QTY: 2
Return Policy:

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Subaru Impreza
WRX STI 2006, 2007WRX STI Limited 2007WRX STI Hatchback 2008, 2009, 2010, 2011, 2012, 2013, 2014WRX STI Special Edition Hatchback 2010WRX STI Limited Sedan 2011, 2012, 2013, 2014WRX STI Limited Hatchback 2011, 2012, 2013, 2014WRX STI Sedan 2011, 2012, 2013, 2014WRX 2002, 2003, 2004, 2005, 2006, 2007WRX TR 2006, 2007WRX Limited 2006, 2007WRX Sedan 2008, 2009, 2010, 2011, 2012, 2013, 2014WRX Hatchback 2008, 2009, 2010, 2011, 2012, 2013, 2014WRX Premium Sedan 2010, 2011, 2012, 2013, 2014WRX Premium Hatchback 2010, 2011, 2012, 2013, 2014WRX Limited Sedan 2010, 2011, 2012, 2013, 2014WRX Limited Hatchback 2010, 2011, 2012, 2013, 20142.5 GT Sedan 2009, 20102.5 GT Hatchback 2009, 2010
Subaru WRX STI
Base 2015

The Cosworth High Flow Subaru Fuel Rail Kit is specifically designed for "top feed" style fuel injectors and is configurable for various fuel line installation scenarios. Each fuel rail is machined from solid aluminum and features a natural hard anodized finish for lasting durability. Each kit includes dash 6 AN fittings that will allow you to install fuel lines of your choice. This kit is intended for race and high performance applications and is not intended as a direct replacement for the factory fuel lines and fuel rails. Can be used with the Cosworth TGV Delete Kit (PN 20015678).
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andrew_browning6953470 11 months ago
these are great have 2011 sti runnin 1300cc injectors custom fuel lines fits great went together great
Verified Purchase
Excellent Rails
stellarzeller 2 years ago
Before I installed these rails on my 2011 GRB, I had perrin rails. I used these rails to sufficiently push 480awp on pump gas. They offer a wide array of options for tuning and customization of your fuel lines. If you are running a Huge Borgwarner Twin Scroll and need the option of running high volume rails in a pass through dual feed setup, then these are a great option to add along with the cosworth composite deletes and intake manifold. I've been using these on my daily driven beast for over a year, I've deleted both dampers with russell 5/16 adapter clips to -6 to -8 feed and return lines, with a Russell Y block right above my starter that splits into -6 lines at cylinders 1 and 2 with the return going parallel to a turbosmart adjustable FPR attached with a bracket on the driver side TGV delete, Air pumps were deleted as well allowing space for this. All in all these rails are great if you want a clean setup and plenty of fuel.


  • AnswerQ: 2013 STI  My2013STI 1 year ago

    do i need to change my fuel lines for these rails to work on my 2013 sti sedan, or will they just be a direct replacement?

    • A: The Cosworth fuel rails will require aftermarket fuel lines and unfortunately we don't offer any fuel lines at this time.

      Kyle A. 1 year ago

  • AnswerQ: EJ205 JDM wrx engine  combibug 3 years ago

    Hi guys, just wondering if this will fit a JDM EJ205 wrx engine application? Tq

    • A: These fuel rails should fit the JDM EJ205 engine, but unfortunately we cannot guarantee fitment on vehicles from outside the USA.

      Zach G. 3 years ago

  • AnswerQ: 2002 sti  paulsrexi85097 3 years ago

    Just wondering I have a 2002 sti... Will it fit ?? Australia got the Subaru 2002 wrx sti Thanks

    • A: Unfortunately we are unable to guarantee fitment for non USDM vehicles. However that being said, I believe the JDM '02 STI is very similar to the USDM '04 STI. In which case they should work, but again we cannot guarantee fitment.

      Matt G. 3 years ago

  • AnswerQ: What else is needed?  2007subarusti 3 years ago

    besides the fuel lines.. what else is needed to make this a complete kit??

    • A: You will need to also hook up the fuel pressure regulator along with feed and return distribution blocks accordingly.

      Kirill C. 3 years ago

  • AnswerQ: 02 WRX  markchristopherclark50337 3 years ago

    Does these fuel rails have the same mountings as the Perrin fuel rails? I have found that different brands mounting holes can be different.

    • A: We have not compared this system to other brands similarity to check for cross compatibility. So we are not able to confirm how similar or different they are.

      Kirill C. 3 years ago