Performance Transmission Cooler Bar & Plate

Features:

• 60% better heat dissipation than stock
• Bar and plate design maximizes cooling
• Increased surface area improves thermal transfer
• Slows fluid for better heat exchange
• Keeps transmission temperatures stable under load
• Ideal for towing, racing, or performance use
• Protects against fluid breakdown and seal damage
• Direct bolt-on fit for 2011-2014 Duramax
• No cutting or modifications required
• Durable aluminum construction with louvered fins
• Helps extend overall transmission life
• Backed by a limited lifetime warranty

Keep Your Transmission Cool When It Matters Most

When you’re towing heavy, hauling up steep grades, or running performance mods on your 2011-2014 Duramax, your transmission is under constant stress. Excess heat is the silent killer that wears down fluid, damages seals, and shortens the life of your transmission. The PPE Performance Transmission Cooler gives your truck a serious cooling advantage with up to 60% more heat dissipation than stock. This means cooler temps, more consistent shifts, and longer-lasting internal components, even in the harshest conditions. It installs easily as a direct bolt-on replacement, with no cutting or drilling required. Whether you're pulling a trailer across state lines or hammering it down at wide open throttle, this cooler helps your Allison stay in the safe zone. It’s a smart upgrade for anyone who demands more from their truck and wants peace of mind while doing it.

Built For High Heat And Heavy Duty Demands

The PPE 124063000 Transmission Cooler is designed with performance in mind, using a high-efficiency bar and plate core that dramatically improves heat transfer. The design slows fluid flow through the bars, allowing more time for thermal exchange, while the outer plates and louvered fins rapidly draw that heat away. Compared to the restrictive factory cooler, this unit delivers a 60% improvement in heat dissipation, which plays a key role in keeping transmission temps in check during high-load situations. Increased surface area further enhances cooling, making it ideal for tuned trucks, heavy towing, or regular long-distance hauling. It fits all 2011-2014 GM Sierra and Silverado 2500HD/3500HD trucks with the 6.6L Duramax, and installs in place of the factory cooler with zero modifications. The result is a cooler, more stable transmission with less thermal stress on components. Backed by a limited lifetime warranty, this PPE cooler is built to outlast and outperform.

Fitment: 2011, 2012, 2013, 2014  GM Sierra/Silverado 2500HD/3500HD 6.6L Duramax

Notes:

• Designed for 2011-2014 GM 2500HD/3500HD with 6.6L Duramax
• Excessive heat is a leading cause of transmission failure
• Ideal upgrade for trucks used in towing or performance applications
• Bar and plate core slows fluid for better heat exchange
• Provides 60% more heat dissipation than the factory cooler
• Helps prevent fluid breakdown, clutch wear, and seal damage
• Greater surface area improves overall cooling efficiency
• Direct bolt-on replacement with no modifications required
• Enhances transmission reliability and service life
• Backed by a limited lifetime warranty from PPE