The factory transmission cooling on the 2020+ Chevrolet and GMC Duramax L5P 6.6L is sized for stock duty, and fluid temperatures climb fast under the sustained load of towing and heavy hauling. Heat is what wears a transmission out. The Mishimoto Transmission Cooler attacks the problem with raw capacity: a tube-and-fin core with a 245% increase in core volume over stock, giving the system far more headroom to keep fluid temperatures in a safe range when the truck is working hardest.----The core also adds a 137% increase in frontal area, putting more of the cooler directly in the incoming airstream, and a 173% increase in external fin area to move heat from the fluid into the air more efficiently. All-aluminum construction handles the thermal demands of stock and modified Duramax trucks alike, and the cooler retains the factory transmission line connections for a clean, complete upgrade with no additional adapters or plumbing.----Direct fit for the 2020+ Chevrolet and GMC Duramax L5P 6.6L. No drilling, cutting, or modification required. Backed by the Mishimoto Lifetime Warranty.
- 245% larger core volume for serious heat dissipation - the oversized tube-and-fin core gives the transmission far more capacity to pull heat from the fluid under tow and heavy load.
- 137% more frontal area catches more cooling airflow - the larger frontal core area puts more of the cooler in the incoming airstream to drop fluid temps faster.
- Factory connections, no adapters required - the cooler uses the OEM transmission line connections for a complete bolt-on upgrade with no extra fittings or plumbing work.
- Tube-and-fin aluminum core built for sustained load - durable all-aluminum construction holds transmission temps in check through the heat of towing where stock cooling falls short.
- 173% more external fin area accelerates heat transfer - the added fin surface moves thermal energy from the fluid into the airstream far more efficiently than the stock cooler.
- Drops in without modification - confirmed direct fit for 2020+ Chevrolet and GMC Duramax L5P 6.6L trucks, with no cutting, fabricating, or adapter work required
- Own it for life - backed by Mishimoto’s Lifetime Warranty, your investment is protected long after install day.
Attributes:
- Brand Name: Mishimoto
- GTIN: 00840197727379
- Core Height: 8.3
- Core Material: Aluminum
- Core Thickness: 1.3
- Core Width: 33.4
- Electric Fan: No
- Finish: Natural Aluminum
- Grade Type: Performance
- Height: 8.6
- Inlet Diameter: 1
- Install Difficulty: 2
- Line Included: No
- Mounting Hardware Included: Yes
- Outlet Diameter: 1
- SellingPoint01: 245% larger core volume for serious heat dissipation - the oversized tube-and-fin core gives the transmission far more capacity to pull heat from the fluid under tow and heavy load.
- SellingPoint02: 137% more frontal area catches more cooling airflow - the larger frontal core area puts more of the cooler in the incoming airstream to drop fluid temps faster.
- SellingPoint03: Factory connections, no adapters required - the cooler uses the OEM transmission line connections for a complete bolt-on upgrade with no extra fittings or plumbing work.
- SellingPoint04: Tube-and-fin aluminum core built for sustained load - durable all-aluminum construction holds transmission temps in check through the heat of towing where stock cooling falls short.
- SellingPoint05: 173% more external fin area accelerates heat transfer - the added fin surface moves thermal energy from the fluid into the airstream far more efficiently than the stock cooler.
- SellingPoint06: Drops in without modification - confirmed direct fit for 2020+ Chevrolet and GMC Duramax L5P 6.6L trucks, with no cutting, fabricating, or adapter work required
- SellingPoint07: Own it for life - backed by Mishimoto’s Lifetime Warranty, your investment is protected long after install day.
- SellingPoint08: N/A
- SellingPoint09: N/A
- SellingPoint10: N/A
- SellingPoint11: N/A
- SellingPoint12: N/A
- SellingPoint13: N/A
- SellingPoint14: N/A
- SellingPoint15: N/A
- TechSpec Applications: 2020+ Chevrolet/GMC 2500HD 6.6L Duramax--2020+ Chevrolet/GMC 3500HD 6.6L Duramax
- TechSpec Caution: N/A
- TechSpec Chassis Codes: GMT
- TechSpec Core Construction: Tube-and-Fin
- TechSpec Core Height (in): 8.3
- TechSpec Core Length (in): 33.4
- TechSpec Core Thickness (in): 1.3
- TechSpec Engine Codes: L5P
- TechSpec Fluid Capacity (qts): 1.5
- TechSpec Includes: (1) Transmission Cooler--(2) M6 Studs--Mishimoto Lifetime Warranty
- TechSpec Inlet: N/A
- TechSpec Installation Notes: N/A
- TechSpec Note: N/A
- TechSpec Outlet: N/A
- TechSpec Overall Height (in): 8.6
- TechSpec Overall Length (in): 40
- TechSpec Overall Width (in): 2.4
- TechSpec Rows: 20
- TechSpec Transmission Codes: Allison 10-speed
- Thickness: 2.4
- Width: 40
Extended Information:
- Country of Origin: CN
- Emissions : Emissions Compliance Exempt
Packing Information:
- Quantity of Each: 1
- Package UOM: EA
- Dimension: 41.5 x 4.1 x 10.2 inches
- Weight: 6 POUNDS
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