Mishimoto MMTC-DMAX-17SL Transmission Cooler for Chevrolet/GMC 6.6L Duramax L5P

The Mishimoto MMTC-DMAX-17SL is a high-performance automatic transmission oil cooler engineered specifically for 2017-2019 Chevrolet and GMC trucks equipped with the 6.6L Duramax L5P diesel engine. This upgraded transmission cooler is designed to significantly improve cooling efficiency and protect your transmission during demanding towing, hauling, and performance applications.

Key Features:

• 67% greater core volume compared to the factory transmission cooler for enhanced fluid capacity and heat dissipation
• 164% greater external fin surface area than stock cooler maximizes heat transfer efficiency
• Stacked-plate construction provides superior durability and cooling performance over tube-and-fin designs
• Direct-fit design ensures easy installation with no modifications required
• CNC-machined adapters included for seamless connection to factory fluid lines or aftermarket AN fittings
• Premium materials and construction resist corrosion and withstand harsh operating conditions
• Backed by Mishimoto's Lifetime Warranty for long-term peace of mind

This transmission cooler is an essential upgrade for Duramax L5P owners who regularly tow heavy trailers, haul substantial loads, or operate in hot climates where transmission temperatures can exceed safe limits. By maintaining optimal transmission fluid temperatures, this cooler helps extend transmission life, improve shifting performance, and prevent costly transmission failures.