
Mishimoto Direct-Fit Transmission Cooler for 2017-2019 Chevrolet/GMC 6.6L L5P Duramax
Combat the heat and safeguard your transmission with the Mishimoto Direct-Fit Transmission Cooler, designed specifically for the 2017-2019 Chevrolet/GMC 6.6L L5P Duramax. Whether your vehicle is a towing powerhouse, a fleet workhorse, or a high-performance daily driver, efficient cooling is essential to maintain optimal transmission performance and longevity.
Product Features:
- Direct Fit: Custom-designed for seamless integration with all 2017-2019 Chevrolet/GMC 6.6L L5P Duramax models.
- Enhanced Cooling: Features a stacked-plate design that provides superior cooling efficiency and durability, significantly outperforming the stock cooler.
- Increased Capacity: Boasts a 67% larger core volume and 164% greater fin surface area compared to the stock cooler, ensuring enhanced heat dissipation.
- Easy Installation: Includes CNC-machined adapters for straightforward connection to stock or AN transmission cooler lines, along with direct-fit brackets and tailor-made hoses for a hassle-free installation.
- Lifetime Warranty: Backed by the Mishimoto Lifetime Warranty with Accident Protection, offering peace of mind and reliability for as long as you own your vehicle.
Included Components:
- (1) Mishimoto Stacked Plate Transmission Cooler
- (2) CNC-Machined Quick-Disconnect to Hose Barb Adapters
- (2) Stock-style Quick-Disconnect Fittings
- (2) Transmission Hoses
- (1) Air Temperature Sensor Relocation Bracket
- (4) Mounting Brackets
- (4) Worm Gear Clamps
- Mounting Hardware
Note: Silverado models may require minor grille trimming for proper fitment.
Upgrade to Mishimoto for advanced cooling performance and protect your transmission from the perils of excessive heat.

Mishimoto Direct-Fit Transmission Cooler for 2017-2019 Chevrolet/GMC 6.6L L5P Duramax
Combat the heat and safeguard your transmission with the Mishimoto Direct-Fit Transmission Cooler, designed specifically for the 2017-2019 Chevrolet/GMC 6.6L L5P Duramax. Whether your vehicle is a towing powerhouse, a fleet workhorse, or a high-performance daily driver, efficient cooling is essential to maintain optimal transmission performance and longevity.
Product Features:
Direct Fit: Custom-designed for seamless integration with all 2017-2019 Chevrolet/GMC 6.6L L5P Duramax models.
Enhanced Cooling: Features a stacked-plate design that provides superior cooling efficiency and durability, significantly outperforming the stock cooler.
Increased Capacity: Boasts a 67% larger core volume and 164% greater fin surface area compared to the stock cooler, ensuring enhanced heat dissipation.
Easy Installation: Includes CNC-machined adapters for straightforward connection to stock or AN transmission cooler lines, along with direct-fit brackets and tailor-made hoses for a hassle-free installation.
Lifetime Warranty: Backed by the Mishimoto Lifetime Warranty with Accident Protection, o[...]
Mishimoto Direct-Fit Transmission Cooler for 2017-2019 Chevrolet/GMC 6.6L L5P Duramax
Combat the heat and safeguard your transmission with the Mishimoto Direct-Fit Transmission Cooler, designed specifically for the 2017-2019 Chevrolet/GMC 6.6L L5P Duramax. Whether your vehicle is a towing powerhouse, a fleet workhorse, or a high-performance daily driver, efficient cooling is essential to maintain optimal transmission performance and longevity.
Product Features:
- Direct Fit: Custom-designed for seamless integration with all 2017-2019 Chevrolet/GMC 6.6L L5P Duramax models.
- Enhanced Cooling: Features a stacked-plate design that provides superior cooling efficiency and durability, significantly outperforming the stock cooler.
- Increased Capacity: Boasts a 67% larger core volume and 164% greater fin surface area compared to the stock cooler, ensuring enhanced heat dissipation.
- Easy Installation: Includes CNC-machined adapters for straightforward connection to stock or AN transmission cooler lines, along with direct-fit brackets and tailor-made hoses for a hassle-free installation.
- Lifetime Warranty: Backed by the Mishimoto Lifetime Warranty with Accident Protection, offering peace of mind and reliability for as long as you own your vehicle.
Included Components:
- (1) Mishimoto Stacked Plate Transmission Cooler
- (2) CNC-Machined Quick-Disconnect to Hose Barb Adapters
- (2) Stock-style Quick-Disconnect Fittings
- (2) Transmission Hoses
- (1) Air Temperature Sensor Relocation Bracket
- (4) Mounting Brackets
- (4) Worm Gear Clamps
- Mounting Hardware
Note: Silverado models may require minor grille trimming for proper fitment.
Upgrade to Mishimoto for advanced cooling performance and protect your transmission from the perils of excessive heat.