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Mishimoto Performance Aluminum Radiator X-Line Manual Transmission - Subaru Models (inc. 2008+ STI / 2008-2014 WRX)
Mishimoto Performance Aluminum Radiator X-Line Manual Transmission - Subaru Models (inc. 2008+ STI / 2008-2014 WRX)
Mishimoto Performance Aluminum Radiator X-Line Manual Transmission - Subaru Models (inc. 2008+ STI / 2008-2014 WRX)
Mishimoto Performance Aluminum Radiator X-Line Manual Transmission - Subaru Models (inc. 2008+ STI / 2008-2014 WRX)
Mishimoto Performance Aluminum Radiator X-Line Manual Transmission - Subaru Models (inc. 2008+ STI / 2008-2014 WRX)
Mishimoto Performance Aluminum Radiator X-Line Manual Transmission - Subaru Models (inc. 2008+ STI / 2008-2014 WRX)
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User Media for: Mishimoto Performance Aluminum Radiator X-Line Manual Transmission - Subaru Models (inc. 2008+ STI / 2008-2014 WRX)
User Media for: Mishimoto Performance Aluminum Radiator X-Line Manual Transmission - Subaru Models (inc. 2008+ STI / 2008-2014 WRX)
User Media for: Mishimoto Performance Aluminum Radiator X-Line Manual Transmission - Subaru Models (inc. 2008+ STI / 2008-2014 WRX)
User Media for: Mishimoto Performance Aluminum Radiator X-Line Manual Transmission - Subaru Models (inc. 2008+ STI / 2008-2014 WRX)
User Media for: Mishimoto Performance Aluminum Radiator X-Line Manual Transmission - Subaru Models (inc. 2008+ STI / 2008-2014 WRX)

Mishimoto Performance Aluminum Radiator X-Line Manual Transmission

Subaru Models (inc. 2008+ STI / 2008-2014 WRX)

Read 14 Reviews | 20 Q&As
Part # MMRAD-STI-08X
$362.95
msrp: $483.60

In stock!
Ships today if ordered in
3 hrs 37 mins

Features & Product Details

RallySport Direct carries a large selection of the Mishimoto X-Line Performance Aluminum Radiator to not only improve the cooling efficiency of your vehicle but to also make for an excellent upgrade over your factory unit.

 

Here are the key features:

  • Full aluminum construction provides increased heat and pressure tolerance, improved heat dissipation, increased durability and improved cooling efficiency
  • 3-row core
  • Manufactured with TIG-welded end tanks for improved strength and extended service
  • 100% brazed aluminum core for maximum reliability
  • Increased coolant capacity directly results in improved cooling efficiency
  • Included 1.3 BAR radiator cap raises the boiling point of engine coolant to provide a safer and more efficient system
  • Designed to original equipment specifications
  • Designed for manual transmission models
  • Please note: The radiator cap provided with this particular radiator should replace the stock cap that is located n the expansion tank. Your factory issued/stock radiator cap should be the one used on the Mishimoto Radiator. The Mishimoto radiator cap is a two-way valve, and when compared to the stock single valve, there is a difference in construction, and cannot be used on the radiator. If you try to use the provided Mishimoto cap on the radiator, then you risk overheating. 

    Upper radiator hose may require trimming for proper clearance.

     

    Specifications

    Brand: Mishimoto
    Core Depth: 2.00 in
    Core End Tank Material: Aluminum
    Core Height: 13.39 in
    Core Width: 27.09 in
    Includes Radiator Cap: Yes
    Mfgr. Warranty: Limited Lifetime
    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.
    RallySport Guarantee

    PEOPLE WHO VIEWED THIS ITEM ALSO VIEWED

    REVIEWS & CUSTOMER MEDIA

    14 Reviews
    4.5 out of 5 Stars
    5 Stars
    (10)
    4 Stars
    (2)
    3 Stars
    (1)
    2 Stars
    (1)
    1 Stars
    (0)
    Customer Photos and Videos
    Mishimoto Performance Aluminum Radiator X-Line Manual Transmission ( Part Number: MMRAD-STI-08X)
    Mishimoto Performance Aluminum Radiator X-Line Manual Transmission ( Part Number: MMRAD-STI-08X)
    Mishimoto Performance Aluminum Radiator X-Line Manual Transmission ( Part Number: MMRAD-STI-08X)
    Mishimoto Performance Aluminum Radiator X-Line Manual Transmission ( Part Number: MMRAD-STI-08X)
    Mishimoto Performance Aluminum Radiator X-Line Manual Transmission ( Part Number: MMRAD-STI-08X)
    Tight fit.  5 months ago
    5out of 5stars

    It is a great quality, boxy besign but does fit. It is a pretty tight fit if you have everything stock. You’ll have to trim upper and lower radiator hoses and remove cover of air pump. Otherwise it work great. Drain is oversized and in original location and come with two sized fittings for coolant bleed but it’s not a true taper thread so use a good thread sealant. Just wish it had the trans cooler or oil cooler options like the CFS race radiators CSF7042O.
      
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    1 of 1 people found the following review helpful
    Rad Caps 8 months ago
    4out of 5stars

    So after completion of the kit on my 08 STI all in all was easy and looks great. Only issue I had was after bleeding process I still had off the chart temps at around 250 degrees. Finally take it to my mechanic and turns out it was the mishimoto caps that was causing the overheating. He said “it was releasing pressure” so he ended up putting some OEM caps and ran it for a good hour and it was operating normally. If anyone has any reasons why, please shoot some knowledge, thanks.
      
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    Time for an upgrade 2 years ago
    5out of 5stars

    Bought this for my 09 STi needed to do my timing belt maint so decided to upgrade the rad. The only thing that i dont like is the coolant overflow tank is hitting a part of the engine. All in all it does what its meant to do.
      
    Was this review helpful?
    wOw 2 years ago
    5out of 5stars

    My old rad legit exploded as I was driving through salt lake, lucky for me I was able to peice it back together with epoxy and limp it over to my bois at RSD and they hooked me up with one of these bad boys. Thanks RSD you the hommie
      
    Was this review helpful?
    6 of 7 people found the following review helpful
    Mishomoto Radiator X-Line 4 years ago
    4out of 5stars

    This radiator is awesome!! Bought these to keep the car cool as much as possible under heavy driving condition. My car is running between 184F and when pushed hard it goes up to 189F. This radiator is a nice piece to have on your car. Installation wasnt bad at all everything fits like OEM just little flush but nothing is touching. I got this radiator with the perrin hoses and its working top notch. The only problem that I kept having with this radiator was the cap. It seems that the cap was not making a proper seal and therefore I had leaks. I took the radiator cap off and replaced it with new and all is working fine. Please pay attention to these new radiator caps from Mishomoto. Overall Im happy with this radiator and is all worth it.
      
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    QUESTIONS & ANSWERS

    • Q: 2010 wrx xline manual   StraightPipe91410 months ago

      How much coolant does the xline hold
      • 0 of 0 people found the following answer helpful

        A:  Mishimoto does not publish the coolant capacity for this radiator, but the core is roughly 3 times larger than stock.

        Riley D. @ RallySport Direct 9 months ago  
          
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    • Q: Mishimoto X line radiator  subiegrsti901 year ago

      As I was reading the description of the product I noticed a caution about not using the provided mishimoto radiator cap? Is that correct or am I miss understanding? Should I use the stock radiator cap?
      • 0 of 0 people found the following answer helpful

        A:  With this radiator, you should be able to use either cap.

        Michael N.
          
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      • 0 of 0 people found the following answer helpful

        A:  Actually RSD is incorrect. You use the provided 1.3bar Mishimoto cap on the expansion tank. The Mishimoto cap is a 2 valve cap. You use a one valve cap like the factory cap on the radiator. Using a 2 valve cap on the radiator will cause overheating. If you want a higher pressure cap for the radiator, make sure it's a 1 valve 1.1bar cap.

        Michael Anderson @
          
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      • 0 of 0 people found the following answer helpful

        A:  Typo correction for the radiator cap. 1.3bar 1 valve cap. NOT 1.1bar

        Michael Anderson @
          
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    • Q: Coolant temperature sensor  Ken2 years ago

      does it come with a welded bung for Defi water temp sensor?
    • Q: Coolant temps  Richard2 years ago

      What kind of a difference do the people who've run this notice? My car runs between 180-185 while running and 190-195 on idle, how much of a difference would this radiator make?
      • 0 of 0 people found the following answer helpful

        A:  It would depend on your elevation, ambient temps, and what your vehicle has done to it. As a general rule, the added capacity will lower cruising temps slightly and help fight overheating when running the vehicle hard for an extended period of time.

        Marcus E. @ RallySport Direct 2 years ago  
          
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    • Q: Mishi X-Line   Kwiksti2 years ago

      What is the difference between this and there std. radiator for the STI? worth the extra money?
      • 0 of 0 people found the following answer helpful

        A:  The X-Line is designed with 3-cores, whereas the standard aluminum radiator is only 2 rows.

        Brady R @ RallySport Direct 2 years ago  
          
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