PPE BAR AND PLATE TRANSMISSION COOLER 124066000 | 2020-2026 6.6L DURAMAX L5P

Improve transmission cooling and help maintain lower operating temperatures in your 2020–2026 GM 6.6L Duramax L5P with the PPE 124066000 Bar & Plate Transmission Fluid Cooler. Designed as a direct-fit replacement for the factory cooler, this upgraded unit features a larger effective cooling area and a wider core to provide significantly improved heat dissipation.

Engineered to remove substantially more heat from the transmission fluid than the factory cooler, this bar-and-plate design helps support transmission performance and reliability in towing, hauling, and demanding driving conditions. Testing has shown transmission temperature reductions of up to 40°F when compared to the stock cooler.

Key Benefits:

• Provides increased transmission cooling capacity
• Helps reduce transmission fluid temperatures
• Supports transmission performance under heavy loads
• Direct-fit installation with no modifications required

Features:

• High-efficiency bar-and-plate transmission cooler design
• Up to 200% greater heat dissipation compared to the factory cooler
• Observed temperature reductions of up to 40°F
• High-quality aluminum construction
• Optimized fin structure for maximum cooling efficiency
• Designed to maintain proper transmission line pressure
• Reuses factory mounting hardware
• Direct-fit replacement

Fitment:

• 2020–2026 GM Silverado/Sierra 2500HD & 3500HD 6.6L Duramax L5P with Allison Transmission