The Mishimoto MMTC-DMAX-17SL Transmission Cooler is an excellent way to improve the cooling of the transmission in your 2017-2019 GM 6.6L Duramax L5P. This direct-fit transmission cooler features a stacked-plate construction for greater core volume and larger external fin surface over the stock cooler. Compared to the weak stock unit, this trans cooler delivers superior cooling power and maximum durability. The included hardware kit makes for a complete installation and provides a leak-free connection to the factory transmission cooler lines. Whether your truck is a daily driver, heavy hauler or competition prepped, this cooler will keep your transmission cool in the most demanding conditions.

• Direct-Fit Installation
• Stacked-Plate Design
• Complete Hardware Kit
• Lifetime Warranty