Mishimoto Transmission Cooler for 2011-2014 Chevrolet Silverado/GMC Sierra 2500 HD/3500 HD (6.6L) MMTC-DMAX-11SL

Fits 2011-2014 Chevrolet Silverado and GMC Sierra 2500 HD/3500 HD (6.6L Duramax LML). Excessive heat is the primary enemy of your Allison transmission, particularly during heavy towing or high-performance use. The Mishimoto MMTC-DMAX-11SL transmission cooler is engineered as a direct-fit solution to maintain optimal fluid temperatures and protect your drivetrain.

Constructed with a durable stacked-plate design, this cooler significantly outperforms the factory unit. It offers a 41-percent increase in core volume and a 73-percent increase in fin surface area compared to the stock 2011-2014 Duramax cooler. The system includes CNC-machined adapters that connect directly to your factory transmission cooler lines or AN lines for a secure, leak-free installation. With direct-fit brackets and tailor-made hoses included, this kit is designed for a straightforward bolt-on upgrade.

• Fits 2011-2014 Chevrolet/GMC 2500 HD/3500 HD with Allison Transmission (LML)
• Stacked-plate construction for maximum durability and thermal efficiency
• 41% increase in core volume over stock
• 73% increase in fin surface area over stock
• CNC-machined adapters for factory or AN line compatibility
• Includes direct-fit brackets and specialized hoses
• Manufacturer Part Number: MMTC-DMAX-11SL
• Mishimoto Lifetime Warranty with Accident Protection