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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 15 Reviews | 20 Q&As
Part # MMRAD-STI-08X
$369.95
msrp: $493.27

In stock!
Ships today if ordered in
2 hrs 27 mins

Features & Product Details

RallySport Direct is proud to bring you high-performance automotive cooling components brought to you by Mishimoto. 

 

This is the Mishimoto X-Line Performance Aluminum Radiator. This radiator features super durable all-aluminum construction to be the ultimate solution to your factory radiator. It features strong TIG-welded tanks, and a thick 3-row core to improve the overall cooling efficiency of your vehicle for long-lasting performance. 

 

 

DETAILS:

  • 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
  •  

     

    NOTES: 

  • The radiator cap provided with this particular radiator should replace the stock cap that is located in 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
  • The 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

    PEOPLE WHO VIEWED THIS ITEM ALSO VIEWED

    REVIEWS & CUSTOMER MEDIA

    15 Reviews
    4.5 out of 5 Stars
    5 Stars
    (11)
    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)
    Couldn't be any easier 5 months ago
    5out of 5stars

    I love this. If installed and bleed properly, it will keep your temps well below factory. Install was super easy and pain free. Took less than an hour, and that is including bleeding the system.
      
    Was this review helpful?
    Tight fit.  1 year 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.
      
    Was this review helpful?
    1 of 1 people found the following review helpful
    Rad Caps 1 year 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.
      
    Was this review helpful?
    Time for an upgrade 3 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 3 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?

    QUESTIONS & ANSWERS

    • Q: 2010 wrx xline manual   StraightPipe9141 year ago

      How much coolant does the xline hold
      • 1 of 1 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 1 year ago  
          
        Was this answer helpful?
    • Q: Mishimoto X line radiator  subiegrsti902 years 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.
          
        Was this answer helpful?
      • 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 @
          
        Was this answer helpful?
      • 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 @
          
        Was this answer helpful?
    • 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  
          
        Was this answer helpful?
    • 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  
          
        Was this answer helpful?

    This Part Fits

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    2007 Subaru Outback XT Limited
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    2017 Subaru WRX STI Limited
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