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Mishimoto Aluminum Radiator (07-18 Jeep Wrangler JK)

ExtremeTerrain no longer carries the Mishimoto Aluminum Radiator (07-18 Jeep Wrangler JK). Please check out 2007-2018 JK Jeep Wrangler Cooling System for an updated selection.
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Features, Video & Details

  • 100% Brazed Aluminum Construction
  • 1.5-Inch Thick Core
  • With TIG-Welded End Tanks
  • Includes a 1.3 Bar Radiator Cap and Magnetic Drain Plug
  • Mishimoto Lifetime Warranty
  • Fits 2007-2018 Jeep Wrangler JK Models


Review & Installation Video

Review & Install Video

This Mishimoto aluminum radiator for the '07 and up JKs is for those of you looking to replace your factory radiator. Because it's broken, it's just clogged up, it's got a leak, and you want something that is built much stronger than a factory radiator, and that is also going to have a lifetime warranty. This is a very high-end, very well-built radiator. Now, if your cooling system is performing properly as is, I don't think that this is going to provide a whole lot of benefit to you from a cooling standpoint. However, as I said, if you have a busted factory one and you want to go with an upgrade, that's where this is going to come into play. Now, a factory radiator is going to be about half the cost of this one. Of course, it's not going to have that lifetime warranty and it's not going to be all aluminum like this, and this is definitely not the most expensive radiator out there either. So it is going to be a middle of the road price, but also a lot better quality than a factory one. As it says in the name, this is aluminum, and it is 100% brazed aluminum. This is also going to have an inch and a half-thick core for optimum cooling. It comes with a magnetic drain plug. In case you do have any sort of issue in your cooling system, that's going to help to capture any junk that might be floating around. Of course, you are going to get your radiator cap along with this. The whole thing is TIG welded. As I said, quality, quality, quality. This is very, very well-built. But it would have to be, in order to pay twice what a factory radiator costs. Getting this installed is going to be a one out of three-wrench installation. However, it may take you around two hours to get it done, because there is a good bit of removal and disassembly to do to get your old radiator out of the way. Now, the first step is going to be removing the grille and removing the frame cover from your Jeep. You can also remove the upper and lower radiator shrouds. At some point in the installation, you're also going to have to remove the airbox, as well as the air inlet tube from your Jeep. Remove that ambient air temperature sensor, so you can make sure you don't break that or pull the wires taut. You're going to, of course, have to drain the fluid out of your radiator, unbolt the A/C condenser and move it out of the way, and finally, remove the whole radiator with the fan assembly attached to it out of the vehicle. From there, the whole thing just happens in reverse. Unbolt the fan assembly. Bolt it to your new radiator. Set it in place. Bolt everything back up. Of course, fill this up with fluid after attaching all of your lines, check for leaks, and burp all of the air out of the system to ensure everything is going to work properly. One tried and true way to get all of the air out of the system is to park the Jeep on a hill with the nose facing up, remove the radiator cap, and just let the Jeep run. When the thermostat opens up, all the air will be pushed out of the top of the radiator, and you won't have any air left in the system. This radiator will run you right around $400 and as I said before, it's certainly not the most expensive. We do have a radiator on the website that is more than double that. However, a factory replacement is going to be about half this cost. Now, with this you are getting the all-aluminum construction and the lifetime warranty. Ideally, this would be the last radiator that you would have to buy for your JK. Where if you get something less expensive and you do have some damage to it or it fails on you, you may have to go ahead and replace it again. So it really depends on where you want to spend your money and what you're looking to get out of a radiator. Again, I don't think that you're going to get a ton of additional cooling out of this radiator. If your cooling system is working properly as is, this isn't going to boost it dramatically. However, if your cooling system isn't working properly because of a clogged-up radiator, of course, this is going to have a big impact on your cooling. Overall, I think that you are getting a lot of quality from this radiator. If you're looking for something that has a lifetime warranty and that is an all-aluminum replacement, I don't think this is a bad buy. So if you're looking for an all-aluminum replacement radiator, I definitely recommend taking a look at this Mishimoto aluminum radiator that you can find right here at extremeterrain.com.

Features. Replace the stock radiator in your vehicle and increase the engine's life with the Mishimoto Aluminum Radiator. Featuring a 1.5-inch thick 100% brazed aluminum core, this radiator ensures effective cooling to the engine. It is durable enough to withstand off-road driving and reduces component wear. This radiator enhances heat dissipation and cools the entire engine to ensure better performance.

Construction. This aluminum radiator has TIG-welded end tanks and a 1.3 bar radiator cap. It comes with a magnetic drain plug and includes the Mishimoto lifetime warranty.

Application. This replacement radiator fits 2007-2018 Jeep Wrangler JK models. It comes with all mounting hardware for proper installation to your vehicle.

Fitment: 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 Details

CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

What's in the Box
  • (1) Radiator
  • (1) Radiator Cap
  • (1) Magnetic Drain Plug
  • Hardware
Installation Info
Will it fit my Wrangler?
  • JK Rubicon 2 Door - 07, 08, 09, 10, 11, 12, 13, 14, 15, 16, 17, 18
  • JK Rubicon 4 Door - 07, 08, 09, 10, 11, 12, 13, 14, 15, 16, 17, 18
  • JK Wrangler 2 Door - 07, 08, 09, 10, 11, 12, 13, 14, 15, 16, 17, 18
  • JK Wrangler 4 Door - 07, 08, 09, 10, 11, 12, 13, 14, 15, 16, 17, 18

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Questions & Answers (5)

5 Top Rated Questions

2016 model?

  • Hello, unfortunately as of now, we do not have a radiator like this for a 2016 Model.

Helpful (1)

So does it or doesn't it fit the JK 12-18 with the 3.6 engine? I'm confused. The description says it fits 07-18 JK. The 2007-11 has the 3.8 and the 12-18 has the 3.6. Some of these questions here say it doesn't fit the 3.6 engine.

  • This Mishimoto Aluminum Radiator is compatible with all JK models, the 2007-2018. So it will be compatible with the 3.6 engine found in the 2012-18 models, as well as the 3.8 in the earlier models.

Helpful (0)

On my 2007 Jeep JK Wrangler, my new Mishimoto radiator keeps losing coolant through the radiator overflo9w into the overflow tank. When the Jeep cools down the radiator DOES NOT suck the coolant back into the radiator. The radiator came with a 19 pound cap. Is this correct for the 2007 Jeep JK? This has the automatic transmission. The vehicle runs fine and never overheats, but I have to keep "topping off" the radiator because it w3ill not return the coolant to9 the radiator when it cools down? How do I fix this?

  • The 19lb cap included in the Mishimoto Aluminum Radiator is sufficient enough to hold the pressure of the cooling system. This issue can result from quite a variety of components and could result from something as small as a broken radiator cap to something as severe as warped heads. We would recommend checking to see if the cooling system is holding pressure, and if it is not, then where it is leaking from.

Helpful (0)

Will this fit a 3.6 pentastar. I don't see an option for one on your site

  • Hello, unfortunately this radiator would not fit in a 3.6 Pentastar.

Helpful (0)

Is the mishimoto radiator a direct fit on JK with automatic transmission?

  • Hello, the Mishimoto Aluminum Radiator (07-11 Wrangler JK) comes with all mounting hardware for proper installation on the 07-11 JK's.

Helpful (0)
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Customer Reviews (6) Write a Review

Overall Rating 3

out of 5 stars

Installation Time:Afternoon

  • Performance Gain 4.666667 4.7
  • Fit 4.666667 4.7
  • Bang For Your Buck 4.333333 4.3

  • 5/5

    Installation Time: Afternoon

    March 06, 2018

    mishimoto radiator

    1st one had a leak .customer service was awsome. sent me a new one right away .2nd one worked perfect .solid unit with no plastic tanks.very happy with it


    Year: 2013Submodel: Wrangler

    Helpful (2)

  • 1/5

    August 11, 2017


    HORRIBLE EXPERIENCE, mishimoto sent me 3 replacements, and all leaked within 2,000 miles. Went back to cheaper factory rad, and am over 5,000 miles no problems.


    Year: 2007Submodel: Wrangler

    Helpful (2)

  • 1/5

    Installation Time: Afternoon

    February 10, 2017

    Please don't buy!

    Bought this to replace my OEM radiator that sprung a leak after 30k miles. Didn't do a warranty fix as I thought an all aluminum one would last forever. Ha ha ha. Nope. This one started leaking after 3 months. Mishimoto replaced this one under their "lifetime warranty". I installed it two weeks ago and, well, this one is already leaking in the same spot as the other. About 2 inches below the filler neck where the core is brazed into the side tank. They clearly are have manufacturing issues at Mishimoto. The cost is nothing relative to the hassle of changing them out.


    Year: 2015Submodel: Rubicon

    Helpful (6)

  • 1/5

    Installation Time: Afternoon

    October 17, 2016

    Bad Quality

    First Mishimoto lasted 6 months. Leaked at the weld. After they made me pay for shipping, replacement was welded wrong at the bracket. I should have stayed with MOPAR plastic. $400 mistake. Lesson learned


    Year: 2014Submodel: Wrangler

    Helpful (3)

  • 5/5

    Installation Time: Afternoon

    May 18, 2015


    Excellent great outstanding good production love it


    Year: 2007Lake Elsinore, CA, USA

    Helpful (4)

  • 5/5

    Installation Time: Afternoon

    August 22, 2014

    Mishimoto Aluminum Radiator Cooling Great

    200,000 miles on original radiator plastic tank failure the Mishimoto Aluminum Radiator wil last the lifetime of my JK and it has a great WARRANTY!!!!


    Year: 2007Buffalo Creek Road, Lorado, WV 25630, USA

    Helpful (4)

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