2020-2023 GM 6.6L Duramax Bar and Plate Transmission Fluid Cooler

Boost your transmission performance with this PPE Bar and Plate Transmission Fluid Cooler. A bigger effective cooling area and thicker core enable the PPE cooler to draw 200% more heat from your transmission fluid compared to the factory cooler.  We observed up to 40°F temperature drop with a PPE cooler installed.

PPE Bar and Plate Transmission Coolers are made of high-quality aluminum, with specially engineered fin construction to maximize cooling efficiency while maintaining pressure drop as low as possible. It is a direct replacement with no modification or additional parts needed. Reuse factory cooler hardware for installation.