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Mishimoto Performance Transmission Cooler (79-20 All)

Item 80213
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      Review & Installation Video

      Hey guys, Stephanie with, here with a Mishimoto Performance Transmission Cooler for all 1979 and up Mustangs. A transmission cooler offers a big benefit to anyone that's done some performance mods for more power output and/or has a high stall converter. This cooler from Mishimoto is a universal application, so it'll work for any Mustang with a Mishimoto aluminum rad. When do you need a trans cooler? Well, it's safe to say that you can always just add a trans cooler. It's never gonna hurt anything as long as it's installed properly, so it won't be a source of leaks or headaches. You'll really start to need a trans cooler for your Mustang once you have a higher output of horsepower and torque. Even if you have a stock converter still, the higher output from the motor will cause a stock converter to stall higher. The higher stall will heat the fluid more than normal and cause high trans fluid temps.You're also gonna want to look into a trans cooler if you've got a high stall converter, for the same reason that I just mentioned. A higher stall means there's gonna be increased fluid forces and pressure within the torque converter, which is how the fluid temps rise. There are many benefits to keeping lower trans fluid operating temps. Cooler temps are better for the life of the transmission and to keep the balance of durability, consistency, and performance from the trans.But just like too hot is bad, so is too cool. You don't want the trans temps to be too cool either. You run into the same problems there that you do when the fluid is too hot. Consistency and lubrication. And too hot leads to fluid breakdown, and then trans failure. This trans cooler is the basic cooler design. There's no need to reinvent the wheel. It's also lightweight and has a three-eighths push-on fitting which makes for an easy install. But it'll also make it a proper sized fitting so you won't have leaking issues. It has a tube and fin design, and it has universal mounting, so you can use it for any application.As far as price, you're looking at spending under $100 for this cooler. Mishimoto does also have a heavy duty trans cooler that comes with an electric fan, if you think you need something more along those lines. And that's gonna cost about $60 more.So, I wouldn't call the install here difficult. The cooler is going to come with some items to help you mount this, like some ties, connectors, foam pads, and O-ring clamps, but you can always fob [SP] up your own way of mounting this, if you're so inclined. Since this is universal, there isn't one correct way to install this, but there are some tips I can give you to help make sure this thing isn't going to cause a ton of issues for you.You do have to be a little bit careful with the install. If it's not done properly, you're gonna be playing around with this thing a lot to fix it. You only wanna use the correct sized hose for the size fittings and lines that you're working with, and you don't want to use fuel hose. Trans fluid does have a specific hose that's rated for the pressure and chemical properties of the fluid. You also wanna make sure that you're using high quality clamps. Now, these clamps are okay, but if it were me, I would check these occasionally to make sure that they're still tight. Overall, you're looking at a two out of three wrenches on the scale, and about two hours of your time to get this installed.Wrapping things up here, this trans cooler from Mishimoto Performance is a universal application cooler that can offer some good benefits for the automatic trans Mustangs that are out there. It's gonna work to keep the trans fluid at the optimal temperatures to keep the trans properly lubricated and functioning to the best of its abilities. You can check it out more online right here at

      Product Information

      Features, Description, Reviews, Q&A, Specs & Installation


      • Great Drivetrain Upgrade
      • Improves Transmission Performance
      • Enables Use of All Mishimoto Radiators
      • Fits Automatic Transmission Mustangs


      Protect Your Investment. Keep your Mustang's automatic transmission running cooler for better performance and a longer transmission life with a Mishimoto Transmission Cooler. Keeping your transmission fluid cool means it can do its job better and breaks down more slowly. This keeps your transmission's internals lubricated better. Better lubrication means a longer lasting, better shifting transmission.

      Perfect for Modded 'Stangs. If your Pony is making big power, your transmission needs to be able to keep its cool. Give it a helping hand with this transmission cooler.

      Use Any Mishimoto Radiator. With this Mishimoto Transmission Cooler kit, you'll also get the ability to use any Mishimoto aluminum radiator. That even includes Mishimoto radiators designed for manual-only applications.

      Application. The Mishimoto Transmission Cooler is a universal kit designed to fit all Mustangs with automatic transmissions. May require custom work for installation.

      Mishimoto's "No Questions Asked" Limited Lifetime Warranty

      Technical Note. Custom work may be required for fitment and function, professional installation required.

      Fitment: 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020

      Mishimoto MMTC-U

      CA Residents: WARNING: Cancer and Reproductive Harm -


      Customer Reviews (13)

      Write a Review

      Ratings Summary

      4.8 out of 5 overall rating from 13 customers

      Installation Time: Afternoon

      Installation Cost: 0-$100

      • November 26, 2019

        5 2000 GT - Gpfxstsi Installation Time: Shop Install Installation Cost: 0-$100


        Installed when the 4.10 gears and transmission rebuild and shift kit. Working great.

        Helpful (3)
      • July 24, 2019

        5 2002 GT - IsaiahS Installation Time: Less than 1 Hour


        I’ve noticed better shifting and the trans runs a lot smoother with the cool temp. This was a Good upgrade for my transmission.

        Helpful (4)
      • March 13, 2019

        5 2010 GT - Martymar

        Good Quality

        Nicely made and seem to be well built. Just wasn't big enough for what I needed.

        Helpful (6)
      • November 14, 2018

        5 2003 GT - MiguelV Installation Time: Less than 1 Hour

        Excellent Product

        Easy to install, it does the job really good, fair price, excellent option...

        Helpful (3)
      • August 26, 2018

        5 1995 GT - EdwinR Installation Time: Less than 1 Hour

        Trans cooler

        Works good, easy install cane with everything you need.

        Helpful (3)
      • May 21, 2018

        4 1999 GT - NathanR Installation Time: Less than 1 Hour

        Transmission cooler

        This cooler works great when your stock transmission cooler can’t keep up with the temps anymore. Was seeing temps upwards of 200 degrees with stock cooler, put this one on hasn’t gone past 180 even 80 degree days

        Helpful (4)
      • May 21, 2017

        4 2006 GT - JohnH Installation Time: Shop Install

        Mishimoto transmission cooler

        The shop I took car to made a bracket that went across the new radiator and the cooler was mounted to the left side of radiator and air conditioning cooler, and that put trans. cooler in the direct air flow and left plenty of air space for the radiator. One problem was that the hose that came with the cooler would not fit on it unless a heat gun was used to soften the ends of the hoses a little then it was still kind of hard to push hose ends on cooler. I also added a mishimoto cooler with fan and a fan temp. controll module, and I have not seen temp on my aeroforce o.b.d gauges go above 175 degrees.

        Helpful (7)
      • March 23, 2017

        4 1990 GT - shawns Installation Time: Less than 1 Hour

        mishimoto trans cooler

        Very nice cooler comes with everything you need to install it.

        Helpful (4)
      • July 08, 2016

        5 1991 GT - Andrew6

        Quality Cooler at a reasonable cost

        I'm using this on my 91 Mustang. Straight forward install, comes with everything you need. I would recommend this trans cooler for anyone that doesn't want to break the bank. Good bang for your buck.

        Helpful (6)
      • December 21, 2014

        5 2002 GT - skitz02gt Installation Time: Afternoon

        Buy it!

        Dont think twice. Just buy it. Light weight and compact. Mounts anywhere you'd like. This cooler will pay itself off wether your racing or a daily driver. Extends the life of your trans regardless of its use. Mishimoto made a great product. Being its a universal cooler, you can use the supplied plastic straps or fab up your own metal supports like I did. 5 star all the way. Thanks AM.

        Helpful (6)

      Questions & Answers (14 answers)

      5 Top Rated Questions

      Can this just mount in place of the existing factory transmission cooler? Or does that still need to be kept in place and this would just be an additional cooler? 2005 V6 Automatic.

      • This is an additional cooler and it would not be recommended to replace the existing cooler with the use of this one, it is an add on cooler to provide extra cooling for the transmission if experiencing harder driving conditions such as racing.

      Helpful (2)

      Does this cooler allow for the use of additional transmission fluid? If so, how may more quarts could I add.

      • This cooler does not allow much more room for extra trans fluid, due to the extra line, it would be best recommended to add 1/4 quart of transmission fluid.

      Helpful (1)

      I'm not seeing any reviews on this cooler when used on the S550 10 speed automatic. Is this going to fit and work? Is there any history? Thanks.

      So this cooler only works with a mishimoto radiator and not the stock 2002 mustang gt (auto) radiator?

      I own a 97 mustang gt v8 with an auto tranny. I just want to make sure but will it work with autos? Think I saw a yes before but I want to make sure. Also, is there anything else that is needed to make it fit?

      • This will fit on automatic transmissions.

      Helpful (0)
      Post Your Question
      9 More Questions
      I have a 2013 mustang v6 base model that is stock will this kit work with what i have or do i have to buy anything ? 1 answer
      Will this cooler pair with the stock radiator in my 2005 v6 auto? Or do I have to buy a Mishimoto radiator? 1 answer
      If I purchased this... Would it also allow me to use other radiators that are designed for manual only? Or does it somehow lock you into using a Mishimoto radiator? 1 answer
      Will this work on a built c4?? 1 answer
      does this work on manual trannys as well ? 1 answer
      Is this a direct bolt on for a 2013 v6 auto? Or do I need to purchase something else along with it? 1 answer
      what else is needed for an 01 gt auto with stock everything( radiator) will it work? 1 answer
      Will this cooler work with the stock radiator on a 12 3.7L V6? I only have the stock radiator on the 2012 mustang 3.7L V6 will the mishimoto cooler work on it or only with their radiator? 1 answer
      same with fan can this be used with 2.3l 4 cyl engine? 1 answer

      Installation & What's in the Box

      Installation Info

      What's in the Box

      Hardware included:
      • Transmission Cooler
      • Hose
      • (4) Four plastic ties
      • (4) Four plastic tie connectors
      • (4) Four foam pads
      • (4) Four o-ring clamps
      • (1) One drain cock connector

      Tech Specs


      • Universal Kit for Automatic Transmissions
      • Thickness: 3/4"
      • Length: 15 1/2"
      • Height: 5"
      • Core: 12"
      • Fitting Size: 3/8" Push On

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