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Koyo OEM Replacement Radiator Manual Transmission - Subaru WRX/STI 2003-2007
Koyo OEM Replacement Radiator Manual Transmission - Subaru WRX/STI 2003-2007
Koyo OEM Replacement Radiator Manual Transmission - Subaru WRX/STI 2003-2007
Koyo OEM Replacement Radiator Manual Transmission - Subaru WRX/STI 2003-2007
Koyo OEM Replacement Radiator Manual Transmission - Subaru WRX/STI 2003-2007
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User Media for: Koyo OEM Replacement Radiator Manual Transmission - Subaru WRX/STI 2003-2007
User Media for: Koyo OEM Replacement Radiator Manual Transmission - Subaru WRX/STI 2003-2007
User Media for: Koyo OEM Replacement Radiator Manual Transmission - Subaru WRX/STI 2003-2007

Koyo OEM Replacement Radiator Manual Transmission

Subaru WRX/STI 2003-2007

Read 45 Reviews | 6 Q&As
Part # A2704
$109.37
msrp: $147.80

Ships within 8 days

Features & Product Details

RallySport Direct carries a large selection of Koyo Radiators from OEM style to racing style radiators to restore or improve the cooling efficiency of your vehicle. 

Here, you are looking at the Koyo OEM Replacement Radiator for the 03-07 Subaru WRX and STI. This radiator has been built to OEM specs to replace your old or leaking factory radiator in your vehicle. This is a direct drop-in replacement with the same build quality and dimensions as your OEM radiator without heavy dealer costs. 

DETAILS:

  • Designed to meet or exceed the high demands of OEM build quality
  • Direct fitment direct replacement
  • Features plastic end tanks with an aluminum core allowing for a cost-effective option compared to the OEM units
  • Fits vehicles equipped with a manual transmission
  • Product Video

    Specifications

    Brand: Koyo
    Core Depth: 1.00 in
    Core End Tank Material: Plastic
    Core Height: 13.375 in
    Core Width: 27.0625 in
    Includes Radiator Cap: No
    Mfgr. Warranty: 18 Months
    Condition: New Product
    Return Policy:
    Standard

    PEOPLE WHO VIEWED THIS ITEM ALSO VIEWED

    REVIEWS & CUSTOMER MEDIA

    45 Reviews
    4.9 out of 5 Stars
    5 Stars
    (42)
    4 Stars
    (3)
    3 Stars
    (0)
    2 Stars
    (0)
    1 Stars
    (0)
    Customer Photos and Videos
    Koyo OEM Replacement Radiator Manual Transmission ( Part Number: A2704)
    Koyo OEM Replacement Radiator Manual Transmission ( Part Number: A2704)
    Koyo OEM Replacement Radiator Manual Transmission ( Part Number: A2704)
    Works as it should 6 months ago
    5out of 5stars

    What else can I say that hasn’t already been said? I’ve run this for a little over 2k miles w a few bolt-on mods and a modest tune w no issues. Installed easy!
      
    Was this review helpful?
    Good oem replacement  1 year ago
    4out of 5stars

    Perfect fit just like the original. Nothing special about this product if you need a replacement for your busted radiator this is a good match for the price. Only bad thing is drain valve on bottom was broken when it arrived Definitely inspect the radiator before instal.
      
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    Great Investment For OEM Radiator 1 year ago
    5out of 5stars

    my oem radiator gave out a couple months ago, I replaced it with this one. It is still holding up, and replacement was easy.
      
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    Just like OEM! 2 years ago
    4out of 5stars

    Long story short....this is perfect OEM replacement for your Subie! OEM is way more. 2 day shipping is awesome....you can't go wrong.
      
    Was this review helpful?
    Great service and Parts 2 years ago
    5out of 5stars

    Bought this after my OEM radiator developed a crack near cap. The part was almost exact match to Stock OEM radiator and was a breeze to swap out with this Koyo OEM replacement radiator. I have had this in my car for over 2 years now and it is going strong.
      
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    QUESTIONS & ANSWERS

    • Q: Legacy Fitment Question  Scooby Robs2 months ago

      2002 Legacy 5MT I like the fact this is almost twice the thickness of the anemic Legacy radiator that is only 5/8" thick. I also like the fact that it is specific for the manual transmission. I have mechanical skills so not worried if it needs a little carassing to install. From the outside it looks identical to the stock one and it comes up when search for the factory Subaru radiator part number of 4511AE01A Anyways I am ready to purchase. My radiator is starting to leak from around the upper tank seal and it won't be long before it pops and leaves me on the side of the road. Thanks!
    • Q: 2002 wrx  Tyly20113 months ago

      Will it fit in 2002 wrx.. Same Bugeye as 2003 wrx but 2002 does not list on the description line. Thank you
    • Q: limits  carl1 year ago

      Will this hold up to a heavily built engine or do I need to go towards the aluminum racing radiator?
      • 0 of 0 people found the following answer helpful

        A:  I would recommend going to a full aluminum radiator if you are hard on the car or plan on tracking it. This one would work: https://www.rallysportdirect.com/part/radiators/koy-vh091672-koyo-aluminum-racing-radiator-manual-transmission

        Tylo R @ RallySport Direct
          
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    • Q: Strength  soonbedead2 years ago

      I'm on e85 and just blew my second oem radiator. The first was the original radiator that came with my car and blew after i started adding power and the second one I got used from a friend just blew after switching to e85. Will this hold up better than an oem one at 360whp?
      • 0 of 0 people found the following answer helpful

        A:  This part should work perfectly as a replacement.

        Michael N.
          
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    • Q: Radiator seam's are leaking!!!   AdamSubaru1232 years ago

      I recently bought this radiator off you guys (September 2018) and the seams are already leaking!! I see that there is a 18 month warranty, how do I return and/or get a new one shipped! I am extremely disappointed as I did not plan on it leaking expensive coolant all over the driveway...again!