
The PPE 124066000 Bar & Plate Transmission Fluid Cooler offers superior cooling for the Allison transmission in your 2020-2024 GM 6.6L Duramax L5P. With a larger effective cooling area and wider core, this cooler draws 200% more heat from your transmission fluid compared to the stock cooler, leading to a temperature drop of up to 40°F.
Manufactured from high-quality aluminum, the PPE 124066000 Bar & Plate Transmission Fluid Cooler features a specially designed fin structure that optimizes cooling efficiency while maintaining line pressure. This unit is a direct-fit replacement that reuses the stock cooler hardware, requiring no modifications or additional parts for installation.
FEATURES:
- 200% more heat dissipation
- High-quality aluminum construction
- Direct replacement using factory mounting locations
- Limited lifetime warranty
Upgrade your GM 6.6L Duramax L5P with the PPE 124066000 Bar & Plate Transmission Fluid Cooler for enhanced performance and reliability.

The PPE 124066000 Bar & Plate Transmission Fluid Cooler offers superior cooling for the Allison transmission in your 2020-2024 GM 6.6L Duramax L5P. With a larger effective cooling area and wider core, this cooler draws 200% more heat from your transmission fluid compared to the stock cooler, leading to a temperature drop of up to 40°F.
Manufactured from high-quality aluminum, the PPE 124066000 Bar & Plate Transmission Fluid Cooler features a specially designed fin structure that optimizes cooling efficiency while maintaining line pressure. This unit is a direct-fit replacement that reuses the stock cooler hardware, requiring no modifications or additional parts for installation.
FEATURES:
- 200% more heat dissipation
- High-quality aluminum construction
- Direct replacement using factory mounting locations
- Limited lifetime warranty
Upgrade your GM 6.6L Duramax L5P with the PPE 124066000 Bar & Plate Transmission Fluid Cooler for enhanced performance and reliability.