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CSF OEM Replacement Radiator - Subaru WRX 2003-2007
CSF OEM Replacement Radiator - Subaru WRX 2003-2007
CSF OEM Replacement Radiator - Subaru WRX 2003-2007
CSF OEM Replacement Radiator - Subaru WRX 2003-2007
CSF OEM Replacement Radiator - Subaru WRX 2003-2007

CSF OEM Replacement Radiator

Subaru WRX 2003-2007

Read 5 Reviews | 3 Q&As
Part # 3356

In stock!

Features & Product Details

RallySport Direct carries a great selection of quality radiator replacements brought to you by CSF Radiators. 

This is the CSF OEM Replacement Radiator. This radiator has been crafted to meet or exceed the demands of OEM quality to give you OEM performance without paying OEM dealer costs. 



  • OEM size and dimensions
  • Direct replacement without any additional modification or alterations for fitment
  • OE coolant compliant to avoid chemical reactions and catastrophic failure
  • Superior engineering and construction for rugged and heavy-duty use
  • Thru Pipe Design on-hose connections to prevent premature failures
  • Ribbed tanks for added strength and durability
  • Polished filler neck
  • NOTE: This radiator will not fit on 02-03 models built before 07/2002 that are not equipped with a radiator cap
  • Product Video


    Brand: CSF
    Core Depth: 0.94 in
    Core End Tank Material: Plastic
    Core Height: 13.375 in
    Core Width: 27.19 in
    Includes Radiator Cap: No
    Mfgr. Warranty: Limited Lifetime
    Condition: New Product
    Return Policy:



    5 Reviews
    5 out of 5 Stars
    5 Stars
    4 Stars
    3 Stars
    2 Stars
    1 Stars
    Customer Photos and Videos
    No user media. You can upload a photo or video of your install by posting a review.
    2.5i fitment 7 months ago
    5out of 5stars

    I do work on my own car and I rate this a 3/10 difficulty. The hardest part was reusing the damn spring clamps on the lower radiator hose. Fit like a glove for my 2007 2.5i Impreza. Running highway and city with AC on and 90°F outside. Coolant staying between 194°F and 203°F. Remember to drain coolant from the block too not just the radiator!!! Well worth the $91 price tag despite slight tweaking. OEM radiator cap fits perfect. I have the orange universal spill proof funnel set from Amazon. It fits the OEM radiator perfect with the "green" attachments, but I needed to mis-match the pieces on purpose and add layers of electrical tape to get the funnel to seal on the CSF radiator. The inside of the filler neck is just different. (Blue insert wrapped in tape, green "cap", if it helps anybody). Had to reuse lower radiator hose as the gates was too short. (Maybe it only fits WRX) Upper gates hose fit great, but leave it in the sun to soften it up if you're using OEM spring clamps it's a little bit thicker. I think the two metal flanges at the bottom are for transmission cooling. I ran a hose/clamps from one to the other to seal it off cuz the 2.5i doesn't use them. Forgot to pour distilled water into it to see if it was even connected to the rest of the radiator. 1 plastic flange at top of radiator corner passenger side. Can't tell if it's sealed or not or just another vacuum hole for the WRX. Sealed off with small piece of hose folded over and clamped.
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    Perfect fit OEM radiator 2 years ago
    5out of 5stars

    Went in smoothly and everything fits like a glove. It does fit both AT and MT.
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    OEM replacement radiator for 02-07 wrx 2 years ago
    5out of 5stars

    This radiator was so close to OEM specs it should be considered original. Everything fit up and went on and together extremely smooth. 10 out of 10 will buy again(hope I do t have to)
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    1 of 1 people found the following review helpful
    Works and is crazy cheap. 4 years ago
    5out of 5stars

    My factory one blew and I was really hesitant to buy a radiator that is cheaper than any other option out there new, reman or used from a yard. Be aware that they will send you one that will work with both transmissions. It looks and fits just like the original one.
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    1 of 1 people found the following review helpful
    OEM Quality at a great Price 5 years ago
    5out of 5stars

    This radiator from CSF is a direct replacement part, fit an finish is excellent and no modification need. If in need of a radiator at a great price with OEM quality look no further.
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    • Q: 2.5i  Casey1 year ago

      Will this radiator fit an 06 2.5i? I know there are a lot of differences between a 2.5i and a WRX,
    • Q: Fitment  bry8312 years ago

      WILL IT FIT BOTH 03 and 08?
    • Q: Automaic or manual  Ethan Her3 years ago

      Does this replacement radiator fit a Manual 04 wrx? It doesn't clarify.