Features:
- Withstands high horsepower and torque loads
- Enhanced shift performance and clutch durability
- Deep cast aluminum pan with 4 quarts extra capacity for better cooling
- Tested and recalibrated valve body assembly for precise control
- Made in the USA
- Direct fit replacement”no modifications required
Unleash Unrivaled Power and Durability
Upgrade your 2020-2024 GM 6.6L Duramax with the SunCoast Category 1 Transmission with Deep Pan, a next-generation powerhouse designed to withstand extreme workloads. Built for towing, hauling, and high-performance driving, this transmission is engineered for longevity and efficiency, ensuring your truck operates at peak performance under the harshest conditions. Featuring Raybestos Powertrain GPZ frictions, steels, and an advanced deep cast aluminum pan, this upgrade enhances torque capacity, shift quality, and heat dissipation”so you can work harder and drive further with confidence.
Precision Engineering for Maximum Performance
The SunCoast Category 1 transmission undergoes a meticulous rebuild process, replacing all worn components with high-quality, high-performance materials to maximize reliability and durability. The included 10L1000 Deep Cast Aluminum Pan increases fluid capacity by 4 quarts over stock, with a finned design for superior heat dissipation. The Raybestos GPZ friction plates and precision-machined steel clutch plates provide smoother shifts, greater torque handling, and increased longevity. Designed to be a direct fit replacement, this transmission installs seamlessly with no modifications needed, allowing you to get back on the road with minimal downtime.
Vehicle Fitment: 2020, 2021, 2022, 2023, 2024 GM 6.6L Duramax
Notes:
- $3,500.00 Refundable Core Charge
SunCoast SC-10L1000-CAT1-4WD-LC Category 1 Transmission with Deep Pan | 2020-2024 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax L5P
SunCoast Performance
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$8,143.15
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SunCoast Performance
SunCoast SC-10L1000-CAT1-4WD-LC Category 1 Transmission with Deep Pan | 2020-2024 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax L5P
- SKU:
- SUNSC-10L1000-CAT1-4WD-LC
- UPC:

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SunCoast Performance
SunCoast SC-10L1000-CAT2-4WD-LC Category 2 Transmission with Expanded E & F Capacity and Deep Pan | 2020-2024 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax L5P
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$9,210.15

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SunCoast Performance
SunCoast SC-10L1000-CAT3-4WD-LC Category 3 Transmission with Pro-Loc Valve Body Combo and Deep Pan | 2020-2024 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax L5P
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$10,185.00

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SunCoast Performance
SunCoast SC-10L1000-CAT3-R Category 3 10L1000 Transmission Rebuild Kit with Pro-Loc Valve Body Combo | 2020-2024 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax L5P
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$3,390.15

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PPE
PPE 128051420 Heavy Duty Cast Deep Transmission Pan for 10L1000 Trasnmission | 2020-2024 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax L5P
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$377.99

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SunCoast Performance
SunCoast GMAX-CAT1-LML-1116-4WD Category 1 500HP Allison Transmission with Converter | 2011-2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML
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$7,857.00
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