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Mishimoto Aluminum Coolant Expansion Tank - Black (15-18 GT, EcoBoost, V6)

Market Price $211.99 You Save 17% ($35.74)
Our Price

$176.25 (each)

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  • Item 389662
  • MPN# MMRT-MUS-15EBK

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    Features, Video & Details

    • Stronger Than Plastic Factory Tank
    • One-Piece Design
    • Black Powdercoat Finish
    • Aluminum Construction
    • Fully TIG Welded for Durability
    • Includes Sight Tube for Coolant Level
    • Direct Fit Replacement
    • Reuses Stock Overflow Cap
    • Fits 2015-2018 GT, EcoBoost and V6 Mustangs

    Review & Installation Video

    Review & Install Video

    Hey guys. Stephanie with AmericanMuscle.com, here with a Mishimoto Aluminum Coolant Expansion Tank for 2015 and up Mustangs. The Mishimoto Aluminum Coolant Expansion Tank is perfect for those S550 owners out there that are looking for some underhood improvements. The factory coolant expansion tank is plastic, and it looks like a bubble which can leave a lot to be desired in the looks department, especially over time. The Mishimoto tank is not only more attractive, making for a better appearance, but it's also more durable and stronger than the factory plastic tank as well. Just looking at the Mishimoto tank here you can see that it's an obvious appearance upgrade right away. It has an attractive one-piece design instead of the stock two-piece design, and it's made from aluminum, and it has lovely welds on it. Even though this tank is powder coated black, the welds are obvious, and Mishimoto doesn't look like they were rushing when they were building this tank. If you weren't that into the black, Mishimoto does offer the same tank with a polished aluminum finish if you prefer that instead, or you always have the option of powder coating it your own color. These tanks are TIG welded which will give strength and durability, and the aluminum will be stronger than the factory plastic tank. So not only will this tank offer an appearance upgrade but it will also be more durable and hold up better than a plastic tank, especially in high performance applications. Like the factory tank, this tank also has internal baffles. The internal baffles will keep the coolant from sloshing around, so this means during braking or high speed cornering, and since the coolant won't be sloshing around it will stay close to the overflow cord therefore helping to prevent coolant starvation and air from entering the system. Another cool thing this tank has is a sight tube. The sight tube allows you to keep an eye on your coolant level at a glance, which is important since this tank is a solid blacked-out tank. This thing will be your new best friend. The tank will come complete with an overflow nipple on the fill neck so you can attach more reservoirs if necessary. It's also a direct fit replacement that's going to work on an S550 V6, Ecoboost and GT so you won't have to worry about making room for this tank, and it reuses a stock overflow cap as well. As far as price, you're looking at spending just over $175 for this tank. The polished aluminum version is the same price so you'll have a choice of which you like better. The tank is nicely made and has some nice features like the hot and cold fill lines, and at the end of the day you're investing in an item that will improve both looks and it will last longer than the factory plastic tank. The install for this overflow tank is very easy. I mentioned that it's a direct bolt-on replacement, which means that it will just take the place of the factory overflow tank, and it does reuse the factory cap. You won't need any special tools to complete the install, just a few sockets, a flat head and hose clamp removers, and it will take less than an hour to complete, and I'm going to call it a one out of three wrenches on the difficulty meter. You will want to drain some of the coolant so you can pull up your stock expansion tank, so having some extra coolant to fill up with is a good idea. The factory tank uninstalls by removing 3 hoses and 2 10 millimeter bolts. It doesn't get much easier than this here. You can clamp your hose down if you want to make sure you don't leak any coolant, and the new tank installs the same way the factory one came out. One hose on the bottom, two bolts on the fan shroud and two hoses on the top of the tank. The stock cap can then be installed, and the install can be finished by topping off and bleeding the coolant system. Wrapping things up here, the Mishimoto Aluminum Coolant Expansion Tank will help you add some additional reliability by upgrading the materials of the expansion tank. It will also add some styling to the engine bay in either black or polished aluminum. It will eliminate the unattractive factory two-piece plastic tank and replace it with a single-piece design that utilizes a sight tube, and you can check it out more online right here at AmericanMuscle.com.

    High Performance. Add additional strength and reliability to your S550 with this black powdercoat Mishimoto Aluminum Coolant Expansion Tank. Replace that weak plastic eye sore that came on your 2015-2018 Mustang, which is known to fail in high temperature situations, with this TIG-welded aluminum beauty. Improve both your underhood styling and coolant tank longevity with this Coolant Expansion Tank by Mishimoto.

    Durable Construction. Fully TIG-welded for durability and crafted from high strength 100% aluminum, this black powdercoated Mishimoto Coolant Expansion Tank will be much stronger, not to mention better looking, than the stock two-piece plastic tank. Featuring internal baffles to keep coolant from sloshing during high speed cornering, braking or acceleration, the baffles also help to prevent coolant starvation from the overflow ports on your S550 engine.

    Easy Installation. This Coolant Tank by Mishimoto has been designed as a direct fit replacement and comes complete with a sight tube to help keep an eye on your coolant levels at a glance. Complete with an overflow nipple on the fill neck to attach additional NHRA reservoirs if necessary, this tank comes with the necessary installation hardware for a simple install, taking just under an hour.

    Application. This black Mishimoto Aluminum Coolant Expansion Tank is designed to fit on 2015-2018 V6, GT and EcoBoost Mustangs and reuses the stock overflow tank cap.

    Fitment: 2015 2016 2017 2018 Details

    What's in the Box
    • (1) Black Expansion Tank
    • (1) Sight Glass Tube
    • (1) Overflow hose
    • (3) Worn-Gear Clamps
    • Mounting Hardware
    Installation Info
    Tech Specs
    Will it fit my Mustang?
    • EcoBoost - 15, 16, 17, 18
    • GT - 15, 16, 17, 18
    • V6 - 15, 16, 17

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    Customer Photos (42) Submit Your Photo

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    13 Questions / 6 Answers

    Ask a Question

    Does this tank keep the new car warranty valid please?

    B8C

    • The Magnusson Moss Warranty Act: US Code – Title 15, Chapter 50, Sections 2301-2312, was created to protect consumer warranties. According to this act, a manufacturer such as Ford cannot void the warranty of a vehicle due to the use of an aftermarket part unless they can prove the aftermarket part directly cause or contributed to the failure of the vehicle.

      AMKody

    Helpful (1)

    My cap will not screw on all the way is that a problem?

    CooperG

    • If you are having issues with your Mishimoto Aluminum Coolant Expansion Tank pleae give us a call at 1844-494-7745, we are open until 11pm EST!

      ChrisAM

    Helpful (0)

    Does anyone know if this tank would be compatible with the Injen evolution CAI for the 15-17 GT's? It looks like the vacuum line on that cai sticks out a fair amount.

    ArtD

    • The Injen Evolution Cold Air Intake will be compatible with the Mishimoto Aluminum Coolant Expansion Tank and will have no fitment issues.

      Rob D

    Helpful (0)

    Does the new mishimoto tank give a cold fill line and max fill line according to the engine your buying for??

    Levi

    • The Mishimoto Aluminum Coolant Expansion Tank has a standard minimum and maximum fill line for GT, Ecoboost and V6.

      AMJEFF

    Helpful (0)

    Any plans for an S197 version, 2011-2014 5.0?

    JimD

    • For this specific Mishimoto black expansion tank, there is no ETA for if or when there will be a similar version for the 11-14 mustang GT's.

      AMjordan

    Helpful (0)

    I have two tanks, one for engine one for Roush Supercharger. Can I get two of these to replace both plastic tanks?

    WilliamH

    • The Mishimoto Aluminum Coolant Expansion Tank will be a direct replacement for the OEM Coolant overflow tank. This would not work as a replacement for the supercharger coolant tank.

      Rob D

    Helpful (0)

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    Customer Reviews (89) Write a Review

    Overall Rating 4.7

    out of 5 stars




    • 5/5

      February 05, 2018

      Good Visual Upgrade

      Mine fit awesome, unlike some of the other reviews. No real performance upside, but looks a lot better than the plastic stock tank. Only thing to watch out for is to make sure the fittings on the side of the tank are tight, mine were just finger tight in the side, so I'm glad I checked. Other than that, it's a great addition to any engine bay.

      Matt

      Year: 2015 Submodel: V6

      Helpful (0)

    • 5/5

      February 03, 2018

      Review from Mishimoto Aluminum Coolant Expansion Tank (15-18 GT, EcoBoost, V6)

      Big upgrade

      Great product! Definitely makes it look much better. The old plastic reservoir was ugly and just didn’t belong on this amazing car. Chrome looks amazing and matches great with the ingot silver.

      silverstang

      Year: 2015 Submodel: V6

      Helpful (0)

    • 5/5

      January 29, 2018

      Review from Mishimoto Aluminum Coolant Expansion Tank (15-18 GT, EcoBoost, V6)

      Rod's mustang "Thor"

      Looks great. I can't believe what a huge difference it made in the looks!!

      AngiE

      Year: 2017 Submodel: GT

      Helpful (0)

    • 5/5

      January 27, 2018

      Great Cosmetic Replacement

      This is definitely an improvement on the "bubble" expansion tank. Would definitely recommend this tank if you want to enhance the look under the hood.

      MikeB

      Year: 2015 Submodel: GT

      Helpful (0)

    • 5/5

      January 26, 2018

      Super Easy!

      The hardest part was getting the old hose clamps locked back in order to get the hoses off the stock tank. I suggest using something like a couple of bolts to plug the upper hoses before moving on to draining the factory reservoir.

      JJ

      Year: 2016 Submodel: GT

      Helpful (0)

    • 5/5

      January 20, 2018

      Awesome.

      I love it, definitely helps but I love the look most of all!

      BrendonS

      Year: 2015 Submodel: EcoBoost

      Helpful (0)

    • 5/5

      January 12, 2018

      Review from Mishimoto Aluminum Coolant Expansion Tank (15-18 GT, EcoBoost, V6)

      calforina special

      love this tank .shipping was fast and it looks great under my hood keep up the great shopping with you

      mac

      Year: 2016 Submodel: GT

      Helpful (0)

    • 5/5

      December 08, 2017

      Good purchase

      I couldn't stand the look of the stock unit. This one is kind of pricey but it has a sight glass on the side to see coolant level which I thought was good. Packaged well and easy to install.

      RichardN

      Year: 2017 Submodel: GT

      Helpful (0)

    • 5/5

      November 26, 2017

      Review from Mishimoto Aluminum Coolant Expansion Tank (15-18 GT, EcoBoost, V6)

      Great tank!!!

      Very high quality workmanship. Would highly recommend this product to all Mustang owners.

      JohnP

      Year: 2015 Submodel: EcoBoost

      Helpful (0)

    • 5/5

      November 12, 2017

      Review from Mishimoto Aluminum Coolant Expansion Tank (15-18 GT, EcoBoost, V6)

      Great Quality!

      This product its just amazing, its stands out every time in a car show or event, the installation was super easy, less than 30 minutes, its a must to get rid of that ugly oem factory bubble.

      RAINIELm

      Year: 2017 Submodel: V6

      Helpful (0)

    • 1/5

      November 02, 2017

      Very Poor Quality Control.

      This is actually the second Mishimoto coolant tank that I have ordered. The first one that I recieved had a known issue with the threads so the original cap would not screw on correctly. The second one beside being the wrong color had a huge blemish on the top from what looked like a factory repair, unacceptable for a product at this price point. Going with another brand. AM was a pleasure to work with as usual.

      Sunshark

      Year: 2016 Submodel: GT

      Helpful (0)

    • 5/5

      November 01, 2017

      Review from Mishimoto Aluminum Coolant Expansion Tank (15-18 GT, EcoBoost, V6)

      Great upgrade

      This is a quality product and looks great. Fit was spot on with zero issues.

      BrianV

      Year: 2015 Submodel: GT

      Helpful (0)

    • 4/5

      October 23, 2017

      Super Looking Tank

      Came as advertised. Need to watch the Mishimoto youtube videos to really know how to install. Pay the $15 to get the proper wrench to remove the hose clamps - it was the most difficult part of installing.

      Drew

      Year: 2016 Submodel: GT

      Helpful (0)

    • 5/5

      October 23, 2017

      Review from Mishimoto Aluminum Coolant Expansion Tank (15-18 GT, EcoBoost, V6)

      Mishimoto aluminum coolant tank

      The tank is made just like they explained, the fit is great no other mods needed. it was a perfect fit and the look is great also the baffles inside do what they said.

      billt

      Year: 2016 Submodel: GT

      Helpful (0)

    • 5/5

      October 21, 2017

      Review from Mishimoto Aluminum Coolant Expansion Tank (15-18 GT, EcoBoost, V6)

      Coolant

      Much better looking under the hood! Looks much more muscle and site glass is also very nice

      SamC

      Year: 2017 Submodel: GT

      Helpful (0)

    • 5/5

      October 20, 2017

      Review from Mishimoto Aluminum Coolant Expansion Tank (15-18 GT, EcoBoost, V6)

      Great addition

      Beats the stock hands down. First thing folks notice when the hood is raised. Get the Crome cover too.

      BrianN

      Year: 2015 Submodel: EcoBoost

      Helpful (0)

    • 2/5

      October 09, 2017

      Review from Mishimoto Aluminum Coolant Expansion Tank (15-18 GT, EcoBoost, V6)

      Needs improvement

      American Muscle gets 5 stars for quick delivery, but the coola t tank gets 2 stars. The coolant tank is fine in design, but the finished product is garbage in appearance. I got the pollished. The welds are adequate and the finish in uneven, scratchy, and looks unfinished. I put Flitz polish on it and let it dry. I rubbed it off with a paper towel with firm pressure - it helped a LOT. When it's hot, the uneven polished areas are very noticeable. Next time I have to drain the radiator, I will remove it and even out the finish with sandpaper. Just to be clear - mine looked as if it had been prepped for the black paint Lol.

      DonS

      Year: 2017 Submodel: GT

      Helpful (0)

    • 5/5

      September 15, 2017

      Much better!!

      This product, no only works very well, but gets rid of that very ugly clear plastic coolant tank that comes stock. Super easy to install and even easier to maintain.

      lerdo

      Year: 2017 Submodel: GT

      Helpful (0)

    • 1/5

      August 31, 2017

      Expected a little more from Mishimoto.

      Received the order but it sat in the box for months before ready to install, decided to install the other day but noticed after taking it from packaging that paint is cracked and going to come off. Long story short expected better from Manufacturer, not AmericanMuscles fault obviously, now trying to decide what to do with the tank because its been to long to try to send back. Lesson learned always check out what you ordered when received regardless of how small it is.

      mustanggt8587

      Year: 2015 Submodel: GT

      Helpful (0)

    • 5/5

      August 02, 2017

      Review from Mishimoto Aluminum Coolant Expansion Tank (15-18 GT, EcoBoost, V6)

      Coolant tank

      After install; I am completely satisfied. Looks good and I like it much better than the one that came with it.

      MilandW

      Year: 2015 Submodel: GT

      Helpful (0)

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