Mishimoto Performance Transmission Cooler | 2020+ L5P Duramax
Keep transmission temperatures under control during towing, hauling, and other demanding driving conditions with the Mishimoto Performance Transmission Cooler. Designed specifically for 2020+ GM trucks equipped with the 6.6L L5P Duramax, this oversized all-aluminum cooler significantly increases cooling capacity while retaining the factory transmission line connections for a direct bolt-on installation.
Key Features
- 245% larger core volume than the factory transmission cooler
- 137% more frontal area increases exposure to cooling airflow
- 173% more external fin area improves heat transfer
- Durable all-aluminum tube-and-fin construction
- Designed for improved cooling under towing and heavy-load conditions
- Uses factory transmission line connections with no adapters required
- Includes (2) M6 Studs for direct-fit installation - no cutting or fabrication required
Benefits
The substantially larger core, frontal area, and external fin surface provide greater capacity to transfer heat away from the transmission fluid. This increased cooling capacity helps maintain more consistent transmission temperatures during towing, hauling, and other sustained high-load conditions. Backed by Mishimoto's Lifetime Warranty
Fitment
Fits 2020-2026 Chevrolet Silverado and GMC Sierra HD trucks equipped with the 6.6L L5P Duramax diesel engine.
