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Premium Transmission Cooling for 2011-2014 Duramax

Protect your investment with the Fleece Performance heavy-duty transmission cooler line kit, specifically engineered for 2011-2014 GM Duramax 6.6L LML trucks. These lines address the common weak points in the factory cooling system, providing a durable, high-flow solution that prevents leaks and overheating during heavy-duty use.

Why Choose Fleece Performance?

• Superior Flow: Designed to reduce restriction, ensuring optimal cooling fluid flow to your Allison transmission.
• Leak-Proof Design: High-quality components and robust construction eliminate the common failure points found in OEM lines.
• Direct Fitment: Engineered for a precise, hassle-free installation on all 2011-2014 Silverado and Sierra 2500/3500 models.
• Durability: Built to withstand the rigors of towing, hauling, and high-performance diesel applications.

Whether you are a daily driver or a dedicated hauler, your transmission relies on consistent cooling to maintain longevity. These lines are the ultimate upgrade for any LML owner looking to eliminate the frustration of leaking factory lines. Experience improved peace of mind and better thermal management for your truck. For all your high-performance diesel needs, rely on the quality selection at GGCRACING.