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Mishimoto Aluminum Coolant Expansion Tank (15-19 GT, EcoBoost, V6)

Market Price $211.99 You Save 17% ($35.74)
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$176.25 (each)

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  • Item 389661

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    Features, Video & Details

    • Stronger Than Plastic Factory Tank
    • One-Piece Design
    • Polished Finish
    • Aluminum Construction
    • Fully TIG Welded for Durability
    • Includes Sight Tube for Coolant Level
    • Direct Fit Replacement
    • Reuses Stock Overflow Cap
    • Fits 2015-2019 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 some additional strength and reliability to your 2015-2019 Mustang with this polished Mishimoto Aluminum Coolant Expansion Tank. Replace that weak plastic eye sore that came on your S550, 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 Mishimoto Coolant Expansion Tank will be much stronger, not to mention better looking, than the factory 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 polished Mishimoto Aluminum Coolant Expansion Tank is designed to fit on 2015-2019 V6, GT and EcoBoost Mustangs and reuses the stock overflow tank cap.

    Fitment: 2015 2016 2017 2018 2019 Details

    MPN# MMRT-MUS-15E

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

    What's in the Box
    • (1) Polished Expansion Tank
    • (1) Sight Glass Tube
    • (1) Overflow hose
    • (3) Worn-Gear Clamps
    • Mounting Hardware
    Installation Info
    Tech Specs
    Will it fit my Mustang?

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    Questions & Answers (20)

    5 Top Rated Questions

    Does this tank keep the new car warranty valid please?

    • 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.

    Helpful (3)

    Will this work with the performance package since it comes with an already upgraded coolant tank?

    • The Mishimoto Aluminum Coolant Expansion Tank can be used on the Performance Package GT Mustangs from 2015-2018.

    Helpful (2)

    I have a 2016 Mustang GT with a Roush supercharger. I believe I saw a pic with same configuration but wanted to make sure this will fit.

    • The Mishimoto Aluminum Coolant Expansion Tank will work with your Roush Supercharger.

    Helpful (2)

    CAN THIS TANK BE USED ON A 2016 GT 350?

    • The Mishimoto Aluminum Coolant Expansion Tank will fit the GT350 Mustang.

    Helpful (1)

    Since this coolant tank is aluminum, wouldn't it attract/get hotter?

    Post Your Question
    10 More Questions
    I have seen this product installed on a 2018 GT350 along with the passenger and driver side oil separators. However, this product gives me an alert that it will NOT fit my vehicle. Is there a difference that it fits the 2016 model GT350 and not the 2018? 1 answer
    Can it be painted? 1 answer
    Would this work for 03 mach1 that has a SC coyote swap? 1 answer
    My cap will not screw on all the way is that a problem? 1 answer
    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. 1 answer
    Does the new mishimoto tank give a cold fill line and max fill line according to the engine your buying for?? 1 answer
    Any plans for an S197 version, 2011-2014 5.0? 1 answer
    I have two tanks, one for engine one for Roush Supercharger. Can I get two of these to replace both plastic tanks? 1 answer
    Will this work with an Airaid CAI? 1 answer
    Would assume it also fits a GT350? Thanks! 1 answer

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    Customer Reviews (100+) Write a Review

    Overall Rating 4.6

    out of 5 stars




    • 5/5

      March 19, 2019

      Review from Mishimoto Aluminum Coolant Expansion Tank - Black (15-19 GT, EcoBoost, V6)

      Much nicer than the factory plastic bee hive unit.

      Install was fairly simple and the fitment is great. This looks so much more at home in the engine bay than the OE clear plastic jug.

      CameronK

      Year: 2019 Submodel: GT

      Helpful (0)

    • 5/5

      March 18, 2019

      Review from Mishimoto Aluminum Coolant Expansion Tank - Black (15-19 GT, EcoBoost, V6)

      Looks great!

      Relatively easy to install. Just make sure you have some towels/shop rags on hand because you WILL spill some coolant in the process. Also, ensure your overflow hose clears the belly pan through a side opening. Aesthetically, the tank is much more in line with the overall looks of the engine than the OEM coolant tank. Big improvement.

      RN

      Year: 2018 Submodel: GT

      Helpful (0)

    • 5/5

      March 12, 2019

      Review from Mishimoto Aluminum Coolant Expansion Tank - Black (15-19 GT, EcoBoost, V6)

      Great look. Easy install

      Wow where do you start. If you own a Ford Mustang GT like I do. Did you know the giant bubble or marshmallow they place under the hood looks horrible. The mishimoto coolant expansion tank fits the looks under the hood a lot better than the clear plastic bubble expansion tank. Super easy install super fast shipping. And great Packaging. I will continue to order from AmericanMuscle!

      AndrewP

      Year: 2015 Submodel: GT

      Helpful (0)

    • 5/5

      March 10, 2019

      Review from Mishimoto Aluminum Coolant Expansion Tank - Black (15-19 GT, EcoBoost, V6)

      Mustang GT

      Cap Went on really easy installation was very straightforward .

      ScottS

      Year: 2016 Submodel: GT

      Helpful (0)

    • 5/5

      March 08, 2019

      Review from Mishimoto Aluminum Coolant Expansion Tank - Black (15-19 GT, EcoBoost, V6)

      It fits and looks fantastic!

      Installed on a 2018 GT350. It DOES fit! The installation is very easy, less than an hour. It makes such a huge difference in the look under the hood. I HIGHLY recommend. It does fit with passenger catch can as well.

      bbgunn916

      Year: 2018 Submodel: GT350

      Helpful (0)

    • 5/5

      February 22, 2019

      Review from Mishimoto Aluminum Coolant Expansion Tank - Black (15-19 GT, EcoBoost, V6)

      Great addition!!

      I originally was going to purchase a more expensive tank. It was out of stock, so I decided to give this one a try. So glad I did. It was easy to install, fits great, looks great and best of all, half the price!!

      SteveM

      Year: 2018 Submodel: GT

      Helpful (0)

    • 4/5

      February 21, 2019

      engine bay clean up

      This is what the factory should have installed in the first place.

      StevenR

      Year: 2015 Submodel: GT

      Helpful (0)

    • 5/5

      February 10, 2019

      Review from Mishimoto Aluminum Coolant Expansion Tank - Black (15-19 GT, EcoBoost, V6)

      PERFECT FIT AND LOOKS GREAT

      Perfect replacement for the jellyfish overflow tank. This new tank is well made and very nice looking. I am very happy with it.

      KenZ

      Year: 2015 Submodel: GT

      Helpful (0)

    • 5/5

      February 07, 2019

      Review from Mishimoto Aluminum Coolant Expansion Tank - Black (15-19 GT, EcoBoost, V6)

      Finally replaced the bubble

      The worst part under the hood of the 2015 mustang is the ugly plastic jelly fish bubble thing for the expansion tank. Mishimoto produced the perfect replacement with a beautiful tig welded aluminum tank. The fit and finish are great and complement the total look of the engine bay. The install was easy but a little messy, make sure you have some extra radiator fluid on hand as you will lose some in the process.

      Lodans

      Year: 2015 Submodel: GT

      Helpful (0)

    • 5/5

      January 31, 2019

      Review from Mishimoto Aluminum Coolant Expansion Tank - Black (15-19 GT, EcoBoost, V6)

      Elma17

      Great product. Very easy to install appearance and quality of product are great.

      Maurice

      Year: 2017 Submodel: GT

      Helpful (0)

    • 5/5

      January 15, 2019

      Review from Mishimoto Aluminum Coolant Expansion Tank - Black (15-19 GT, EcoBoost, V6)

      Awesome

      Fitment was great, looked and worked well. Now looking for other components for the spring when she comes out of winter storage.

      RossG

      Year: 2017 Submodel: GT350

      Helpful (1)

    • 5/5

      Installation Time: Less than 1 Hour

      January 11, 2019

      Aluminum Coolant Tank

      I had this installed an I’m completely satisfied with it. It get lots of praise at car shows!

      Ralph

      Year: 2017 Submodel: EcoBoost

      Helpful (1)

    • 5/5

      December 15, 2018

      Review from Mishimoto Aluminum Coolant Expansion Tank - Black (15-19 GT, EcoBoost, V6)

      Mishimoto aluminum coolant tank

      Very nice product very easy to install less than half hour

      SteveM

      Year: 2015 Submodel: GT

      Helpful (1)

    • 5/5

      December 13, 2018

      Review from Mishimoto Aluminum Coolant Expansion Tank - Black (15-19 GT, EcoBoost, V6)

      Coolant tank

      Great quality,easy install,finishes off the under hood area

      Jeff

      Year: 2018 Submodel: GT

      Helpful (2)

    • 4/5

      December 11, 2018

      Review from Mishimoto Aluminum Coolant Expansion Tank - Black (15-19 GT, EcoBoost, V6)

      Nice tank

      The tank is beautiful and it fits exactly as advertised. The issue I had was my UPR oil seperator catch can. It rests directly behind the expansion tank and the fit between the two is non-existent. In other words, they touch. I had to do a little messing around to finally make them work together in such a small area. Other than that it's a great upgrade from stock. If you don't have that particular catch can then it is a non issue. Instantly changes the appearance under the hood and it is well made, welds are fantastic. Worth it.

      RussellR

      Year: 2017 Submodel: GT

      Helpful (1)

    • 5/5

      December 04, 2018

      Review from Mishimoto Aluminum Coolant Expansion Tank - Black (15-19 GT, EcoBoost, V6)

      Nice!

      It make engine bay look custom. I don't have no problem installing it. Also if you plan on install this item make sure have enough coolant because I have to add some coolant.

      TerminatorT500

      Year: 2017 Submodel: GT

      Helpful (2)

    • 5/5

      November 19, 2018

      Review from Mishimoto Aluminum Coolant Expansion Tank - Black (15-19 GT, EcoBoost, V6)

      Great quality, features, fitment!

      Just like the headline says, plus I like the extra capacity and sight tube. Easy install.

      CarlZ

      Year: 2015 Submodel: GT

      Helpful (1)

    • 5/5

      November 12, 2018

      Review from Mishimoto Aluminum Coolant Expansion Tank - Black (15-19 GT, EcoBoost, V6)

      Great piece

      It's completely cosmetic but worth every penny. Removes the out of place looking factory unit and looks like the one Ford should have used.

      Michael

      Year: 2017 Submodel: GT

      Helpful (2)

    • 5/5

      November 10, 2018

      Review from Mishimoto Aluminum Coolant Expansion Tank - Black (15-19 GT, EcoBoost, V6)

      Great product

      This is a really clean addition to the engine bay. Has nice welds, and the sight tube makes it easy to keep tabs on your coolant level. Really easy install, just take your time to not pour coolant all over your clean engine bay.

      JoshS

      Year: 2017 Submodel: GT

      Helpful (2)

    • 5/5

      November 03, 2018

      Review from Mishimoto Aluminum Coolant Expansion Tank - Black (15-19 GT, EcoBoost, V6)

      Adds Pop To Engine Bay!

      I installed this expansion tank earlier today and I have to say that I am very pleased with the look. So much better than the stock expansion tank! I have a 2018 GT PP1 and did have to remove the engine cover in order to fit the tank just right. This tank comes with an overflow hose that the stock tank does not have.

      RobertM

      Year: 2018 Submodel: GT

      Helpful (2)

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