Mishimoto Transmission Cooler for 2017-2019 Chevrolet/GMC Silverado/Sierra 2500HD/3500HD (6.6L) - Silver MMTC-DMAX-17SL

Fits select 2017-2019 Chevrolet Silverado and GMC Sierra 2500HD/3500HD models equipped with the 6.6L L5P Duramax engine.

Excessive heat is the primary failure point for heavy-duty transmissions, especially under the stress of towing, hauling, or performance driving. The Mishimoto MMTC-DMAX-17SL transmission cooler is engineered to combat thermal soak in 2017-2019 GM 6.6L L5P Duramax trucks. This direct-fit upgrade utilizes a durable stacked-plate design to provide significantly more cooling capacity than the factory unit, ensuring your Allison transmission operates within its optimal temperature range.

Compared to the stock core, the Mishimoto transmission cooler offers a 67% increase in core volume and 164% more fin surface area. The kit includes CNC-machined adapters that provide a secure, leak-free connection to your factory transmission lines or aftermarket AN lines. With direct-fit brackets and tailor-made hoses, this cooler installs without modifications to the vehicle's structural components.

• 67% increase in core volume over the factory transmission cooler
• 164% increase in fin surface area for maximum heat dissipation
• Durable stacked-plate construction for high-pressure reliability
• CNC-machined adapters connect directly to stock fluid lines
• Direct-fit for Allison transmission applications
• Includes all necessary brackets and hoses for installation
• Manufacturer Part Number: MMTC-DMAX-17SL