Mishimoto Transmission Cooler for 2006-2010 Chevrolet/GMC Silverado/Sierra 2500HD/3500 (6.6L LBZ/LMM)

Fits select 2006-2010 Chevrolet Silverado and GMC Sierra 2500 HD, 3500, and 3500 HD models (6.6L LBZ/LMM).

Excessive heat is the primary cause of transmission failure, especially in heavy-duty towing, fleet work, or performance applications. This Mishimoto direct-fit transmission cooler replaces the factory unit with a high-efficiency stacked-plate core designed for maximum durability and thermal regulation. Engineered specifically for the Allison transmission, it offers a significant increase in cooling capacity over the stock setup.

The core features an 84-percent increase in volume and a 125-percent increase in fin surface area compared to the 2006-2010 OE cooler. The kit includes CNC-machined adapters for a secure, leak-free connection to factory transmission lines or aftermarket -AN lines. With direct-fit brackets and tailor-made hoses, this upgrade installs without the need for custom fabrication.

• Stacked-plate construction for superior cooling and pressure resistance
• 84% increase in core volume over stock
• 125% increase in fin surface area
• CNC-machined adapters for factory or AN fluid lines
• Includes direct-fit brackets and hoses for straightforward installation
• Manufacturer Part Number: MMTC-DMAX-06SL
• Mishimoto Lifetime Warranty included