• Mishimoto Transmission Cooler W/electric Fan
• Mishimoto Transmission Cooler 5.9 Cummins
• Mishimoto Transmission Cooler Reviews
• Mishimoto Transmission Cooler Reviews

Whether your diesel spends its life hooked to the trailer or makes frequent visits to the drag strip, Mishimoto offers a plethora of aftermarket components geared toward improving performance and aiding durability. In competition applications, where tens of thousands are invested in order to get a 7,500-pound truck to run with exotic sports cars, Mishimoto’s heat exchangers can work wonders in terms of keeping powertrain temperatures in check. Its bolt-in products help protect huge performance investments like engine and transmission builds. Such was the case for the TorqShift automatic in the ’08 F-250 test mule in this article.

Fresh back from being transformed into a Stage 5 transmission courtesy of Elite Diesel Engineering—and because the truck was in the neighborhood of 900 hp—the owner wanted to keep the five-speed 5R110 as cool as possible. This meant ditching the OEM transmission cooler for one with more surface area and core volume that wouldn’t require any modifications to fit behind the grille. For the trouble-free, direct-fit the owner was looking for, Mishimoto’s transmission cooler got the call. For a quick tutorial on how to make your ’08-’10 Super Duty’s TorqShift run at least 20 degrees cooler, keeping scrolling.

Your Investment Needs Protecting

Mishimoto Universal Transmission Cooler and Power Steering Cooler. Price: £67.32 (Incl. VAT) QUICK VIEW. Transmission Cooler (Auto), fits Ford Mustang GT/V6/EcoBoost 2015-2017. Price: £372.10 (Incl. VAT) QUICK VIEW. DCT Transmission Cooler, fits BMW F8X M3/M4 2015-2020. The Mishimoto transmission cooler boasts a 174% greater core volume, and 192% greater fin surface area than the stock transmission cooler. The included CNC-machined adapters connect directly to the stock transmission cooler lines for leak-free cooling. Direct-fit brackets and tailor-made hoses make installation easy. The Mishimoto MMTT-K2-14 transmission cooler is a direct fit for your 2014+ GM truck, so installation is a breeze compared to universal trans coolers. Overall, if you use your truck for any heavy towing or hauling, this cooler will help prolong the life of your transmission and keep your truck on the road longer.

Protecting a high-dollar Elite Diesel Engineering Stage 5 TorqShift transmission is what this article is all about—and why the Mishimoto direct-fit cooler was chosen. Elite’s Stage 5 version of the 5R110W has long been revered for its ability to live up to its hype—and we’ve seen it hold up to power levels well north of 1,000rwhp and 1,800 lb-ft of torque. Highlights in any Stage 5 build include an Aermet input shaft, billet intermediate and output shafts, a billet Overdrive planetary and a billet Low/Reverse hub. The icing on the cake in this particular build is a triple disc converter from Diesel Performance Converters.

Mishimoto Supplies Everything But The Labor

For $369.95, not only do you get Mishimoto’s dyno-proven and real-world-validated 5R110W transmission cooler, you get everything required to install it. This includes direct fit mounting brackets, transmission hose, a leveling spacer (for use if you’re also running Mishimoto’s radiator), worm gear clamps, all mounting hardware and (of course) the stacked-plate heat exchanger.

Stacked-Plate Design

Like the factory transmission cooler, the Mishimoto unit is of a stacked-plate design rather than tube and fin style. Stacked-plate heat exchangers are more efficient than tube and fin versions because the latter utilizes a tube winding through the core that has a low surface area in contact with the fins. Stacked-plate designs feature hollow plates to carry fluid across the core and turbulators within the plates to route fluid throughout channels so more fluid is exposed to the plate’s surface. The result is far better cooling capability.

Mishimoto Transmission Cooler W/electric Fan

A Taller, Thicker Core

In using the same, stacked-plate design, how exactly is the Mishimoto transmission cooler superior to the factory one? Well, at 8.9-inches, the Mishimoto cooler’s core height is approximately twice as tall as the factory unit. Thanks to the added height, the 17-row, stacked-plate cooler provides a 121-percent larger surface area than stock. And at 1.25 inches, the Mishimoto transmission cooler’s core is also considerably thicker than the OEM version, which increases overall core volume by 63 percent.

Making Every Square Inch Count

With the factory cooling stack already tightly packed behind the intercooler on the 6.4L Power Stroke, Mishimoto’s only available way of adding cooling capacity (i.e. size) to the transmission cooler was by making it taller. Luckily, all heat exchangers except for the intercooler sit at a slight angle at the front of ’08-’10 Super Duty’s. The relationship between the radiator and the non-angled intercooler forms a V at the bottom of each cooler, with the transmission cooler and power steering cooler dwelling in the middle of the V. Utilizing every bit of leftover space within the middle of that V was exactly what the engineers at Mishimoto did.

Same Overall Width

Due to space constraints but also to keep its installation as simple as possible, the overall width of the Mishimoto transmission cooler is 33.5 inches, the same as stock. The supplied mounting brackets attach to the cooler via two 10mm bolts per side for solid, secure anchoring. However, the brackets should not be fully tightened up until the cooler is in place on the vehicle.

Adjustable Mounting Brackets

These brackets attach the Mishimoto transmission cooler to the radiator and are a vital part in the installation process. By design, their extra slots and bends offer the ability to angle the transmission cooler slightly outward into the “V” that exists where the intercooler and radiator on the 6.4L Power Stroke nearly meet. We’ll reiterate that the supplied leveling spacer mentioned earlier is only required when the transmission cooler is installed in conjunction with Mishimoto’s aftermarket radiator. The leveling spacer wasn’t necessary in this case, as the owner is still running the factory radiator (for now).

High-Quality Transmission Hose

The ½-inch transmission fluid hose Mishimoto supplies with its cooler meets SAE J1532 specs and this particular line is good for up to 302 degrees F (and -40). Its maximum operating pressure rating is also more than adequate, at 250 psi.

Mishimoto Vs. Stock

As you can see in the photo above, the Mishimoto transmission cooler dwarfs the factory cooler in size (specifically and most notably, in height). By squeezing a taller and thicker cooler into place, the Mishimoto proves that bigger is better in terms of heat exchangers. In this particular application, where the torque converter will build considerable heat during the staging process at the drag strip, the hope is that a larger factory-style (stacked-plate) transmission cooler will suffice in a high horsepower setting without the need to add an auxiliary cooler in the bed. So far, the Mishimoto cooler has performed flawlessly, with peak ATF temps running at least 20 degrees cooler than they did previously.

Accommodates Thicker Aftermarket Intercoolers

Just like stock, the Mishimoto transmission cooler sits below the power steering cooler and is sandwiched between the intercooler and radiator. And despite its vastly increased height, the truck’s owner was pleasantly surprised to find that it cleared the thicker aftermarket intercooler (from Precision Turbo & Engine) he planned to run.

Heard of the 6.4L Power Stroke’s notorious leaky radiator problem? Mishimoto has a solution for that, too. Check it out right here.

Looking to curb high trans temps in your 2014+ GM truck? The transmission cooling experts at Mishimoto have you covered! With their industry leading designs that offer a direct “plug and play” fitment, you can install their 2014+ GM truck specific transmission cooler in your driveway with basic hand tools within a few hours.

As recommended in our Silverado and Sierra transmission cooler guide, the Mishimoto MMTC-K2-14 is one of the best coolers for these trucks given the fact it provides serious ATF cooling and is designed for a simple installation.

Mishimoto Transmission Cooler 5.9 Cummins

Mishimoto MMTC-K2 Specs

The Mishimoto MMTC-K2 is a 27″ wide plate and fin style cooler that can help you use your truck to its full capabilities..

This Mishimoto transmission cooler comes with a complete installation kit that is specifically designed for your truck, which makes for a hassle free installation. All lines, brackets, clamps and fittings are included and designed to make install very simple with basic handtools and some common DIY know-how.

The only thing you will need to complete the installation is an extra quart of Dexron VI ATF to compensate for the additional 0.65 quarts of fluid capacity and to replace any fluid that may have leaked out during installation from the factory lines. As always, you should check your transmission fluid level to make sure you are within a suitable range.

Cooler Dimensions: 27″ x 6″ x 1.25″

Cooler Type: Plate & Fin

Fitting Size: 3/8″ barb

Number of Cooling Rows: 14

Additional Fluid Capacity: 0.65 Quarts

Fits The Following Application:

2015+ Cadillac Escalade 6.2L V8
2015+ Cadillac Escalade 6.2L V8
2014+ Chevrolet Silverado 1500 5.3L V8
2014+ Chevrolet Silverado 1500 6.2L V8
2015+ Chevrolet Suburban 5.3L V8
2015+ Chevrolet Tahoe 5.3L V8
2014+ GMC Sierra 1500 5.3L V8
2014+ GMC Sierra 1500 6.2L V8
2015+ GMC Yukon 5.3L V8
2015+ GMC Yukon 6.2L V8
2015+ GMC Yukon XL 5.3L V8
2015+ GMC Yukon XL 6.2L V8

Mishimoto MMTC-K2 Installation

As mentioned, this cooler comes with a complete installation kit that includes the correct transmission lines and hoses, clamps, and mounting hardware. This makes for one of the more seamless transmission coolers on your 2014+ GM truck.

While the cooler may cost more than others, the cost is certainly made up for the direct fitment that is extremely easy to mount on your truck.

In this step by step installation video, you will see that this is truly a direct fit transmission cooler that Mishimoto made extremely easy to install yourself in your driveway with basic hand tools.is

Mishimoto MMTC-K2-14 Pros & Cons

• Heavy Duty
• Direct Fit
• Includes All Hardware
• Easy Installation
• Fits All Full Size GM Trucks

• Price

The Mishimoto MMTC-K2-14 is the perfect choice for all your 2014+ GM full sized truck’s transmission cooling needs. With its large 27″ x 6″ x 1.25″ core, you can rest assured that high transmission temps are a thing of the past.

This cooler provides an 0.65 quarts of fluid to the transmission cooling system, so it is best to check your transmission fluid after installation to make sure your truck is at the proper fluid level.

The Mishimoto MMTT-K2-14 transmission cooler is a direct fit for your 2014+ GM truck, so installation is a breeze compared to universal trans coolers.

Overall, if you use your truck for any heavy towing or hauling, this cooler will help prolong the life of your transmission and keep your truck on the road longer.

Mishimoto Transmission Cooler Reviews

Mishimoto Transmission Cooler Reviews