Mishimoto's direct-fit transmission cooler for 2011–2014 Chevrolet and GMC 6.6L Duramax (LML) uses a stacked-plate design for durability and enhanced cooling. It increases core volume by 41% and fin surface area by 73% over stock, and includes CNC-machined adapters, direct-fit brackets and tailor-made hoses for an installation-friendly upgrade backed by Mishimoto's lifetime warranty.
Mishimoto 11-14 Chevrolet / GMC 6.6L Duramax (LML) Transmission Cooler