Duramax Allison Transmission Cooler Upgrade

The Duramax Allison Transmission Cooler Upgrade is a great way to improve the performance and reliability of your Duramax vehicle. This upgrade replaces the stock transmission cooler with an upgraded, heavy-duty one that can handle larger amounts of power and torque. It also helps reduce heat in the engine compartment and improves overall cooling capacity for maximum protection.

Additionally, it includes mounting hardware to ensure secure installation and long-term durability. With this upgrade, you can expect improved longevity for your transmission as well as better shift quality with less slippage due to increased fluid pressure from the additional cooler size.

If you’re looking to upgrade your Duramax Allison transmission cooler, then you’ll be glad to know that there are a few options available. By upgrading the cooler, it can help improve overall cooling performance and extend the life of your transmission. This can be done by replacing the stock radiator with an upgraded performance model or adding an external oil cooler system.

These upgrades can provide improved heat dissipation and keep temperatures in check while you’re out on long drives or hauling heavy loads over rough terrain.

Duramax Allison Transmission Upgrades

How Hot is Too Hot for Allison Transmission?

When it comes to Allison transmissions, the temperature should not exceed 200°F (93.3°C). Anything above that can cause serious damage to the transmission system, including burning out seals and gaskets, warping of internal parts due to excessive heat and premature failure of other components. Because these temperatures are difficult to monitor on an ongoing basis, regular checks with a thermometer should be done in order to ensure that the transmission is kept at optimal operating temperatures.

In addition, taking steps such as ensuring proper cooling airflow around the transmission and avoiding heavy loads when possible can help keep your Allison Transmission running at its best for many years.

Is a Bigger Transmission Cooler Better?

Generally speaking, a bigger transmission cooler is better for your vehicle. This is because larger coolers have more surface area to dissipate heat from the fluid inside and can handle higher volumes of fluid than smaller coolers. Additionally, larger transmission coolers provide an improved cooling capacity compared to their smaller counterparts due to their increased volume of air passing though them, which helps reduce the temperatures of the transmission’s internal components.

Ultimately, this increases the life expectancy of your automatic transmission and reduces the possibility of it failing prematurely due to excess heat.

Should I Upgrade My Transmission Cooler?

If you drive a vehicle that is frequently exposed to high temperatures or carries heavy loads, upgrading your transmission cooler may be beneficial. A transmission cooler helps to keep the temperature of your automatic transmission fluid at an optimal level, which in turn can help extend its life and improve your overall driving experience. It’s worth noting that while upgrading may be helpful for more extreme conditions, it’s not necessarily essential on most cars; if you’re unsure whether it would benefit you specifically, it’s best to consult a qualified auto mechanic who can assess both the condition of your vehicle and what type of upgrade would work best for you.

Do Aftermarket Transmission Coolers Work?

Yes, aftermarket transmission coolers do work. They are designed to keep the temperature of a transmission below its maximum operating temperature. This helps to extend the life of your vehicle’s transmission by reducing wear and tear on internal components and ensuring it remains within safe operational parameters.

Aftermarket coolers come in several different designs, such as plate-and-fin or stacked-plate style coolers that can be mounted either externally or internally. Installing an external cooler is usually easier than an internal installation but requires additional space near the radiator, while installing an internal cooler can take up valuable engine bay real estate but offers better cooling performance for higher power applications. Ultimately, a properly sized aftermarket cooler will help prolong your transmission’s life by keeping temperatures under control no matter how hard you drive!

Duramax Allison Transmission Cooler Upgrade

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Best Transmission Cooler for Allison 1000

If you’re looking for the best transmission cooler for your Allison 1000, look no further. The Derale 13301 Transmission Cooler is an excellent choice that features a robust construction and efficient design to keep your vehicle’s transmission running cool and smooth. It also has an easy-to-install mounting system with all necessary hardware included, so setup should be a breeze.

With its large capacity of 12 quart/11 liter, this product can handle whatever workload you throw at it without compromising performance.

Lly Transmission Cooler Upgrade

If you drive a car with an automatic transmission, an Lly Transmission Cooler Upgrade is a great way to improve its longevity and performance. An upgraded cooler allows your transmission to remain at the optimal temperature for longer periods of time, which helps reduce wear on the internal components. Additionally, it can help prevent fluid breakdown due to heat buildup, leading to smoother shifts and improved fuel economy.

For those who are looking for more reliability from their vehicle’s transmission system, this upgrade can be a great investment in the long run.

How to Keep Allison Transmission Cooler

Keeping your Allison Transmission cooler is important for the overall health and longevity of your vehicle. There are several things you can do to help keep it running cool, such as regularly monitoring fluid levels and inspecting hoses for leaks or damage, keeping airways clean from dirt or debris buildup, using a transmission cooler if necessary, checking for any possible blockages in the cooling system, and replacing old or worn out components. Additionally, frequent oil changes with high-quality synthetic oils can also help reduce heat build up inside the transmission by reducing friction between moving parts.


In conclusion, it is clear that upgrading the Duramax Allison Transmission Cooler can be an easy and cost-effective way to improve the performance of your vehicle. With a few simple steps, you will increase the life of your transmission and its ability to handle more power. Not only does this upgrade offer improved reliability and longevity, but it also provides peace of mind knowing that you have taken care of one of the most important components in your car’s engine.


  • Alex Gearhart

    Alex Gearhart, an automotive expert specializing in transmissions, has over a decade of hands-on industry experience. With extensive knowledge in manual and automatic systems, Alex is passionate about educating car enthusiasts on vehicle maintenance. As the chief author at TransmissionCar.com, Alex simplifies complex concepts for readers, helping them make informed decisions about their vehicles. Outside of work, Alex enjoys road trips, restoring classic cars, and exploring new automotive technologies.

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