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An image of the Mishimoto Performance Transmission Cooler for the 1999-2013 Chevy Silverado and GMC Sierra.

The Heat is On – Performance Transmission Cooler for 1999-2013 Chevy Silverado & GMC Sierra

Published: April 05, 2024 Updated: April 22, 2025

Chevrolet, Chevrolet/GMC Transmission Cooler 1999-2013

Josh Wayman

For truck owners who depend on their vehicle for work, reliability and performance are paramount. Whether your truck is a construction fleet vehicle or a dedicated tow rig, one of its greatest enemies is heat — especially when it comes to the transmission.

Transmissions can generate a lot of heat, especially when towing, driving in rough conditions, and off-roading. This becomes more of a problem when they’re paired to a powerful engine, such as those used in GMT800 and GMT900 trucks, which is why we’ve been hard at work developing our Performance Transmission Cooler for the 1999-2013 Chevy Silverado and GMC Sierra.

Figure 1. The Mishimoto Performance Transmission Cooler for the 1999-2013 Chevrolet Silverado and GMC Sierra.

Using the same tried-and-true core design as our K2 and Duramax trans coolers, our transmission cooler for the 1993-2013 Chevy Silverado and GMC Sierra boasts a 521% increase in core volume and 278% increase in frontal area compared to stock. The stacked-plate core

Image of a GMC Sierra 1500 with its hood open.

Duty Driver - Performance Aluminum Radiator for the 2019+ Chevy Silverado & GMC Sierra 1500

Published: December 10, 2025 Updated: December 29, 2025

Josh Wayman

The 2019 and newer Chevy Silverado and GMC Sierra 1500 have become the go-to choice for truck owners who balance weekday work with weekend pursuits. These trucks see daily miles, tow heavy loads, and head into the backcountry without hesitation. That versatility comes with a demand for dependable cooling since heat is one of the fastest ways to derail both performance and longevity. The stock radiator does its job for light-duty use, but anyone who pushes their truck harder quickly learns that plastic end tanks and limited capacity create real limits. We built our Performance Aluminum Radiator specifically to eliminate those weak points and give these trucks the cooling foundation they deserve.

The plastic end tanks on the stock radiator, which can become brittle and fail over time.

From the start, durability was the priority. The factory radiator relies on plastic components that can fatigue, crack, and leak as the truck ages or sees heavy work. We replaced every one of those vulnerable

Comfortable Cooling - Radiator R&D, Part 2: Test & Produce

Published: August 23, 2018 Updated: June 01, 2026

Chevrolet Silverado 1500 Radiator 2014+, GMC Sierra 1500 Radiator 2014+

This 2014+ Chevrolet Silverado / GMC Sierra 1500 V8 Radiator is now on pre-sale! Click here to check it out!

Up until now, our 2014+ K2 Silverado radiator has been nothing more than a simple set of goals: create a direct-fit radiator that's larger, and stronger, than the stock radiator. After measuring the radiator and its home in the engine bay, we began working on our replacement.

Like many of our products, this radiator started life on a computer monitor. Jason took his measurements from the stock radiator and created a 3D model that would serve as the template for our prototype. Once the model was complete, we could transfer it to our 3D printer to begin the rapid prototyping process.

MM5148_3D

As the 3D printers wove a web of orange filament into the shape of the radiator end tanks, another piece of the 3D puzzle was being put together across the shop. Our head fabricator took a seat at his table behind the red curtain of our welding area and began fusing the pieces of our prototype core together.

An image of a GMC Sierra 1500 with its hood open in a garage.

Frosty Freight – Transmission Cooler for 2019+ Chevy Silverado and GMC Sierra 1500

Published: September 25, 2024 Updated: April 22, 2025

Josh Wayman

For truck enthusiasts and professionals alike, ensuring continued performance is crucial. One of the most prominent threats to a truck’s performance is heat—especially when it comes to the transmission. An overheating transmission can cause serious damage, particularly when the truck is working hard while towing or off-roading. That’s why we’ve been hard at work developing our Transmission Cooler for the 2019+ Chevrolet Silverado and GMC Sierra 1500.

Mitch, our engineer, set out to design a transmission cooler that would outperform stock. He opted for a tube-and-fin core design, which is less prone to develop air pockets as fluid moves through the system and more resistant to pressure drops. Mitch’s direct-fit design was drastically larger than its stock counterpart, boasting these improvements over stock: