ATS 309-864-4440 Stage 6 Allison LCT1000 Crate Transmission | 2017-2019 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax L5P 4WD

Features:

• Includes ATS Stage 6 Performance Transmission
• Compatible with 2017–2019 L5P Duramax 4WD
• Comes with ATS Five Star Torque Converter
• Includes deep transmission pan for cooling
• Billet input, output, and intermediate shafts
• Features billet P2 carrier and C2 hub
• Includes ATS Co-Pilot transmission controller
• Engineered for high horsepower applications
• Improves durability and torque handling
• Ideal for towing, racing, and heavy use
• Reinforced internals for maximum strength
• $500 shipping surcharge applies

Take Control Of Serious Power With A Transmission That Can Handle It

When you're building serious horsepower in your 2017–2019 L5P Duramax, your stock transmission isn't going to cut it for long. The ATS Stage 6 Allison LCT1000 Crate Transmission is built to handle extreme torque, aggressive driving, and the kind of abuse that would leave a factory unit limping. This complete package gives you everything you need to upgrade with confidence, including a billet torque converter, billet shafts, deep transmission pan, and the Co-Pilot transmission controller for smarter, more responsive shifts. Whether you're towing at the limit, launching on the track, or daily driving a built diesel, this transmission is designed to deliver consistent, dependable performance. The combination of billet components and ATS engineering gives you a transmission that doesn't just survive power, it thrives on it. If you're done compromising and ready to put that horsepower to work without second-guessing your drivetrain, this is the upgrade that takes your build to the next level.

Built With Billet Strength Tuned For High Performance Duramax Builds

The ATS Stage 6 Allison LCT1000 Transmission is a full-strength solution engineered for the demands of high-output 6.6L Duramax L5P engines between 2017 and 2019. This crate transmission features a fully upgraded internal assembly, including billet input, output, and intermediate shafts designed to resist flex and fatigue under heavy torque loads. The package includes the ATS Five Star Torque Converter for improved lock-up control and more efficient power transfer, plus a deep transmission pan to enhance fluid capacity and cooling. It also comes with the ATS Co-Pilot Transmission Controller, which actively manages line pressure and shift strategy to adapt to real-time driving conditions. Additional upgrades like the billet P2 carrier and C2 hub with a modified P1 sun gear ensure the transmission holds up during drag launches, hill climbs, or heavy towing. This system is tuned for maximum durability and seamless integration with other performance mods, making it an essential upgrade for serious diesel builds. Please note a $500 shipping surcharge applies due to the size and weight of this unit.

Fits: 2017, 2018, 2019 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax L5P 4WD

Notes:

• Compatible with 2017–2019 6.6L Duramax L5P 4WD trucks.
• Includes ATS Five Star Torque Converter and Co-Pilot Controller.
• Transmission features billet input, output, and intermediate shafts.
• Equipped with billet P2 carrier and C2 hub with modified P1 sun gear.
• Comes with a deep transmission pan for better cooling and fluid capacity.
• Engineered for high horsepower and heavy-duty applications.
• Built to handle aggressive towing, racing, and performance builds.
• Co-Pilot Controller actively manages shift pressure and timing.
• Transmission ships as a complete crate unit, ready to install.
• A $500 shipping surcharge will be added at checkout.