Mishimoto 7.3L 37 Row Transmission Cooler 99-03

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Mishimoto 7.3L 37 Row Transmission Cooler 99-03


Heavy loads are no match for a 1999-2003 7.3L Powerstroke equipped with the Mishimoto 7.3L Transmission Cooler. The stock 7.3L Powerstrock transmission cooler can come up short of providing sufficient cooling, and with more weight in the truck bed, transmission temperatures tend to rise. Avoid those high temperatures and complement your cooling system with the latest addition to Mishimoto’s 7.3L Powerstroke performance parts, the all-new 7.3L transmission cooler. 

With the Mishimoto 7.3L Transmission Cooler, high transmission fluid temperatures will be the least of your worries. The 37-row Mishimoto stacked plate cooler provides a larger surface area over both of the stock coolers. Core volume is increased by a whopping 265%, and fluid capacity is increased by 1.0 qt. The increased size of this 7.3L transmission cooler provides a proven 10+°F drop in transmission fluid temperature. 

No modifications are necessary for installation, and, just like all Mishimoto 7.3L Powerstroke parts, this cooler comes with the Mishimoto Lifetime Warranty.
  • Direct fit for the 1999–2003 Ford 7.3L Powerstroke
  • Proven +10°F (+5.6°C) drop in transmission fluid temperature with no additional fluid pressure drop
  • No modification necessary for installation, functions with all stock equipment
  • 37-row stacked plate fluid cooler provides larger surface area over the stock 9-row transmission cooler
  • Transmission cooler core has a 265% increase in core volume compared to the factory 9-row transmission cooler
  • Increases transmission fluid capacity by 1.0 qt
  • Mishimoto Lifetime Warranty
Note: Will not work with vehicles that came equipped with a high mounted power steering cooler. These vehicles will need to relocate the power steering cooler to the lower mounting location.
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  • 5
    Super product and super fast shipping

    Posted by Brandon on Feb 18th 2020

    Before this trans cooler I was seeing 200 degree temps even pulling a hill or stuck in traffic. I seen now seeing temps at 150-170. The transmission recovers much quicker from a warm temp.

    This was easy to install. From start to finish was about 3hrs and everything I needed was in the box.

  • 5
    Mishimoto trans cooler

    Posted by Dennis Rasmussen on Feb 10th 2020

    Excellent cooler. Easy installation.

  • 5
    7.3 Mishimoto. Trans cooler

    Posted by Bunk Schmidt on Jan 20th 2020

    The quality and build looks amazing! Haven’t had a chance to install due to weather.. after seeing it , I ordered the inter cooler as well.. think I’ll have to do some overtime and get the complete package and get the radiator.. lifetime warranty.. can’t beat the quality and the warranty

  • 5
    Mishimoto trans cooler

    Posted by Luke Tilley on Jan 16th 2020

    Arrived sooner than expected! Perfect customer service! I will be doing more business with riffrafdiesel

  • 5
    Some cutting may be required

    Posted by Robbie on Jan 6th 2020

    I have installed 4 of these coolers on trucks one 2wd and three 4wd I didn’t have to do any cutting on the 2wd but I did have to cut the bottom outside corners at a 45 degree angle on the top brackets. After that, everything was perfect.

  • 5
    7.3 Mishimoto Transmission Cooler

    Posted by H. Davis - Tri-Power Performance on Dec 11th 2019

    I debated whether to purchase this cooler or an OEM 6.0 cooler. I am VERY pleased I chose the Mishimoto cooler which is cheaper than the OEM especially after obtaining the correct step fittings from 1/2 to 3/8 line. Transmission temperatures are drastically lower and in check within the proper operating range for the transmission fluid. Installation was much easier with the radiator and intercooler out of the way. Because this cooler is now shipped with the updated hoses, the routing will need to change specifically on the passengers side to make everything fit and flow without restriction. The only thing I would change in the design would be to bend each hose barb 90 degrees toward the passengers side of the radiator support. This would make the fitment of the hoses much cleaner like the OEM cooler. Exceptional design and construction! Very nice product!

  • 5

    Posted by Ryland on Nov 9th 2019

    Easy install looks great seems to be well built Super fast shipping as always!

  • 5

    Posted by Ryan on Sep 16th 2019

    This is a very well built trans cooler with everything needed for a 7.3 super duty. For the money it’s better than the 6.0 cooler swap. Keeps trans temps in check in all situations.

  • 5
    Impressive Product

    Posted by Jehiah on May 31st 2019

    Brand New built 4r100 with a decent aftermarket cooler was still hitting much higher temps than I would like.. Extremely impressed with the robust build quality, straightforward installation and excellent performance of this one. Hot day out? Bad traffic jam? Heavy load? All three at once? No problem. Performs so well I may need to put a piece of cardboard in front of part of it in the winter! Also has a serial number and lifetime warranty. I've put close to 10k miles on this one so far in various conditions, would buy again in a heartbeat.