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Mishimoto Aluminum Coolant Expansion Tank (15-20 All)

Item 389661
Call a Mustang Enthusiast at 1-877-887-1105
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Market Price $211.99 You Save 16% ($33.04)
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$178.95 (each)

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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 All 2015-2020 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 2015-2020 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 2015-2020 Mustangs and reuses the stock overflow tank cap.

    Fitment: 2015 2016 2017 2018 2019 2020 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

      Customer Photos (60) Submit Your Photo

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        Questions & Answers (23)

        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 (5)

        CAN THIS TANK BE USED ON A 2016 GT 350?

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

        Helpful (2)

        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)

        Will this work with ford performance air oil separator?

        • Those two items should work together without a problem.

        Helpful (1)
        10 More Questions
        I have 2016 EcoBoost and the hoses match up but the port by the cap . What should I do. 0 answer
        Where is this made? 1 answer
        Since this coolant tank is aluminum, wouldn't it attract/get hotter? 1 answer
        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

          Customer Reviews (100+) Write a Review

          Overall Rating 4.6

          out of 5 stars




          • 5/5

            November 11, 2019

            Review from Mishimoto Aluminum Coolant Expansion Tank - Black (15-20 All)

            Nice upgrade

            Installed on my 2018 Roush Jackhammer. Easy install and looks great.

            B2673ad

            Year: 2018 Submodel: GT

            Helpful (0)

          • 5/5

            November 06, 2019

            Review from Mishimoto Aluminum Coolant Expansion Tank - Black (15-20 All)

            Looks great

            I made this purchase just for looks and it doesn’t disappoint. Now when I show off my engine, I am not embarrassed of the old plastic bubble.

            Emmil

            Year: 2016 Submodel: GT

            Helpful (0)

          • 5/5

            September 09, 2019

            Review from Mishimoto Aluminum Coolant Expansion Tank - Black (15-20 All)

            Just plain cool

            This Mishimoto Aluminum Coolant Expansion Tank is awesome. Works absolutely perfect and adds to the appearance of the engine compartment. Easy to install 1/2 hour not counting cleaning the coolant you might have spilled. Highly recommend.

            DonU

            Year: 2018 Submodel: GT

            Helpful (0)

          • 3/5

            September 07, 2019

            Review from Mishimoto Aluminum Coolant Expansion Tank - Black (15-20 All)

            Had extra nipple that did not fit anythin.

            Looked great but never put on. Said it would fit my 2019 Bullitt and it would have with an extra nipple showing i would have to plug and have it look off. No warning of nipple not needed.

            DennisR

            Year: 2019 Submodel: Bullitt

            Helpful (0)

          • 5/5

            September 06, 2019

            Review from Mishimoto Aluminum Coolant Expansion Tank - Black (15-20 All)

            Mishimoto Tank

            Looks nice on my 2017 coyote but the bottom corner hits my airaid cold air intake tube other than that it looks great.

            Robert23

            Year: 2016 Submodel: EcoBoost

            Helpful (0)

          • 5/5

            August 28, 2019

            Review from Mishimoto Aluminum Coolant Expansion Tank - Black (15-20 All)

            #15BLACKMAMBA

            great look under the hood much more eye appeal than the factory plastic tank

            MikeW

            Year: 2015 Submodel: GT

            Helpful (0)

          • 5/5

            August 24, 2019

            Review from Mishimoto Aluminum Coolant Expansion Tank - Black (15-20 All)

            Tank

            Looks perfect and easy installation. Exactly what I was looking for.

            Tank

            Year: 2015 Submodel: GT

            Helpful (0)

          • 4/5

            August 18, 2019

            Review from Mishimoto Aluminum Coolant Expansion Tank - Black (15-20 All)

            Mishimoto Expansion tank

            Looks nice on my 2015 ecoboost but the bottom corner hits my airaid cold air intake tube other than that it looks great.

            RexM

            Year: 2015 Submodel: EcoBoost

            Helpful (0)

          • 5/5

            August 02, 2019

            The Mishimoto difference

            A must have for dressing up under the hood. This replaces the cheap looking factory tank with a fine crafted look

            Flyingdutchman

            Year: 2015 Submodel: GT

            Helpful (0)

          • 2/5

            July 17, 2019

            Review from Mishimoto Aluminum Coolant Expansion Tank - Black (15-20 All)

            Looks good but...

            I’ve had this tank installed for about a year and it looks great but the sight tube on the side of it cracked and leaked coolant everywhere. It’s like the tube they used isn’t made for the kind of heat the engine puts off.

            Brianna

            Year: 2016 Submodel: GT

            Helpful (0)

          • 5/5

            July 13, 2019

            Review from Mishimoto Aluminum Coolant Expansion Tank - Black (15-20 All)

            Stay Cool

            Best tank for the buck! Pop that hood and show them what Daddy’s got.

            SDStangs

            Year: 2015 Submodel: GT

            Helpful (0)

          • 5/5

            June 23, 2019

            Looks Great!

            The tank looks amazing on my 2015 GT! It took about 45 minutes to install. The quality of construction is second to none! Looks great with aftermarket cap and aluminum hose finishers.

            KenH

            Year: 2015 Submodel: GT

            Helpful (0)

          • 5/5

            May 22, 2019

            Review from Mishimoto Aluminum Coolant Expansion Tank - Black (15-20 All)

            Easy replacement for the bubble tank

            Took less than 30 minutes to replace the OEM tank with this. Looks great.

            David

            Year: 2015 Submodel: GT

            Helpful (0)

          • 5/5

            May 09, 2019

            Review from Mishimoto Aluminum Coolant Expansion Tank - Black (15-20 All)

            Easy Install

            Very easy install. I watched a few videos online so I was prepared. The box did not come with instructions but it was a simple install. Great looking product!

            Riley

            Year: 2016 Submodel: GT

            Helpful (0)

          • 5/5

            May 06, 2019

            Awesome looking!

            Awesome looking and great fit! Must have to dress up engine!

            DeanG

            Year: 2017 Submodel: EcoBoost

            Helpful (0)

          • 5/5

            May 06, 2019

            Review from Mishimoto Aluminum Coolant Expansion Tank - Black (15-20 All)

            Very Good Product

            This is an easy install. It took me maybe 20 minutes and it really cleans up the engine bay. Punting that plastic football tank was a no brainer. A little on the pricey side IMO but still worth it.

            50Ghost

            Year: 2019 Submodel: GT

            Helpful (0)

          • 5/5

            May 03, 2019

            Review from Mishimoto Aluminum Coolant Expansion Tank - Black (15-20 All)

            Nice part

            Came with everything needed to install. Simple and easy. Looks so much better under the hood now and upon changing I noticed that the original plastic piece of junk was leaking at the seam.

            bols

            Year: 2015 Submodel: GT

            Helpful (0)

          • 5/5

            April 19, 2019

            Review from Mishimoto Aluminum Coolant Expansion Tank - Black (15-20 All)

            Clean look

            Looks so much better then the factory plastic or even just a cover. Highly recommend

            MarcK

            Year: 2017 Submodel: GT

            Helpful (0)

          • 5/5

            April 15, 2019

            Review from Mishimoto Aluminum Coolant Expansion Tank - Black (15-20 All)

            THE BUBBLE is GONE!

            This is a huge improvement in the way my engine compartment looks. You can add all you can think of under the hood of your S550, but if you have the bubble, it seems that’s all you see. That thing is was hideous! I put a chrome cap-cover on her, but it didn’t help do anything but draw your eye directly to it. The Mishimoto Expansion Tank looks nice.

            StevenB

            Year: 2017 Submodel: GT

            Helpful (0)

          • 4/5

            April 03, 2019

            Review from Mishimoto Aluminum Coolant Expansion Tank - Black (15-20 All)

            Plastic pumpkin replacement

            Not only looks way better, but easy to install and performs very well!

            Jkelly22

            Year: 2017 Submodel: GT

            Helpful (0)

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