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:
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Brand Name: Mishimoto
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GTIN: 00840197727379
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Cooler Fluid Capacity: 1.5
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Core Height: 8.3
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Core Material: Aluminum
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Core Thickness: 1.3
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Core Width: 33.4
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Electric Fan: No
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Finish: Natural Aluminum
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Grade Type: Performance
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Height: 8.6
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Inlet Diameter: 1
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Install Difficulty: 2
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Line Included: No
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Mounting Hardware Included: Yes
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Outlet Diameter: 1
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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.
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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.
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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.
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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.
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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.
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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
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SellingPoint07: Own it for life - backed by Mishimoto’s Lifetime Warranty, your investment is protected long after install day.
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SellingPoint08: N/A
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SellingPoint09: N/A
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SellingPoint10: N/A
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SellingPoint11: N/A
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SellingPoint12: N/A
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SellingPoint13: N/A
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SellingPoint14: N/A
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SellingPoint15: N/A
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TechSpec Caution: N/A
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TechSpec Chassis Codes: GMT
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TechSpec Core Construction: Tube-and-Fin
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TechSpec Core Height (in): 8.3
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TechSpec Core Length (in): 33.4
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TechSpec Core Thickness (in): 1.3
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TechSpec Engine Codes: L5P
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TechSpec Includes: (1) Transmission Cooler--(2) M6 Studs--Mishimoto Lifetime Warranty
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TechSpec Inlet: N/A
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TechSpec Installation Notes: N/A
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TechSpec Note: N/A
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TechSpec Outlet: N/A
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TechSpec Overall Height (in): 8.6
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TechSpec Overall Length (in): 40
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TechSpec Overall Width (in): 2.4
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TechSpec Rows: 20
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TechSpec Transmission Codes: Allison 10-speed 10L1000
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Thickness: 2.4
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Width: 40
Extended Information:
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Country of Origin: CN
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Emissions : Emissions Compliance Exempt
Packing Information:
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Quantity of Each: 1
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Package UOM: EA
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Dimension: 41.5 x 4.1 x 10.2 inches
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Weight: 6 POUNDS
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