Tru Cool 4544 Transmission Cooler

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The Tru Cool 4544 is one of the larger transmission coolers in the Tru Cool LPD (low pressure drop) line of trans coolers.  Based on its size and GVW rating, the Tru Cool 4544 is a great option for medium duty use on most daily driven trucks, SUV’s or performance cars.

The Tru Cool 4544 is built with a stacked plate design that measures 11″ x 9.5″ x 3/4″, making it a very efficient cooler with a decent sized cooling surface.

Like with most large stacked plate trans coolers, drivers  can expect to see a significant drop in transmission fluid temperatures.  The combination of it having a highly efficient stacked plate construction and its overall size help keep transmission fluid cool in even the most conditions.

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Long Tru-Cool LPD...image Tru-Cool 4544

Tru Cool 4544 Specs

Tru Cool 4544 Transmission Cooler - Transmission Cooler Guide

Like most Tru Cool transmission coolers, the Tru Cool 4544 features a highly durable black aluminum construction with efficient fluid flow through the body for maximum cooling. This cooler utilizes 30 rows of cooling plates to provide efficient transmission cooling for most applications.

Cooler Dimensions: 11″ x 9.5″ x  3/4″

Cooler Type: Plate & Fin

Cooling Rows: 30

GVW: 22,000

Fitting Size: 3/8″ Barb

Highlighted Features
  • 9 1/2″ x 11″ x 3/4
  • 22,000 GVW

Tru Cool Low Pressure Drop System

Just like other Tru Cool coolers, the 4544 utilizes Tru Cool’s unique low pressure drop design that allows for more efficient cooling. The colder automatic transmission fluid is, the thicker it is in viscosity.

This causes the fluid to not flow through the cooler as efficiently as possible, so a passive bypass is built into the cooler to allow the thicker fluid to flow as normal. This thermal bypass is located in the first rows of the cooler.

As the fluid gets warmer, it will start to efficiently flow through the rest of the cooler to keep temperatures as low as possible.  This allows for optimal heat transfer and improved protection against lube system failure. More information about Tru Cool’s low pressure drop system can be found here.

tru cool transmission coolers low pressure drop - Transmission Cooler Guide

Recommended Uses

  • Light Towing & Hauling
  • Daily Driven Trucks & SUV’s
  • Smaller Performance Oriented Cars

Based on the size of the Tru Cool 4544, this cooler is a great option for those looking to improve their existing transmissions temps for when the occasionally to or haul smaller loads with their daily driven truck or SUV.

The Tru Cool 4554 was on our list of transmission coolers to consider in our transmission cooler buyer’s guide based on it being a very viable medium duty option.

Tru Cool 4544 Pros & Cons


  • Stacked Plate Design
  • Low Pressure Drop (LPD)
  • Larger Than Average Size
  • Can Be Used As Stand Alone Cooler


  • May Be Hard To Fit In Some Vehicles


The Tru Cool 4544 is a great choice for a plate and fin transmission cooler, and is certainly hard to beat for the value. We recommend this cooler for trucks, SUV’s, and performance oriented vehicle that require more than average transmission cooling.

Based on Amazon product reviews, this cooler is used on a variety of mini vans and SUVs with great success. Overall, users can expect to see a transmission temperature drop of at least 25 degrees with the Tru Cool 4544.

This cooler has an average 4.8 star average Amazon rating, making is a very good choice, especially for those looking for a larger transmission cooler without breaking the bank. 

  • 9 1/2″ x 11″ x 3/4
  • 22,000 GVW