ATS 309-815-4290 Stage 1 Allison LCT1000 Crate Transmission | 2004.5-2005 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LLY PTO 4WD

Features:

• Fits 2004.5-2005 LLY Duramax 4WD trucks
• Includes upgraded performance transmission
• Comes with Five Star torque converter
• Deep pan enhances fluid capacity and cooling
• Supports PTO-equipped applications
• Ideal for towing and heavy-duty use
• Improves shift quality and durability
• Reduces transmission temperature under load
• Built to handle higher torque levels
• Designed for long-lasting performance
• Complete bolt-in transmission solution
• $500 shipping surcharge applies at checkout

Take Your Duramax To The Next Level

If you're looking to give your 2004.5-2005 Duramax the kind of drivetrain confidence it deserves, the ATS Stage 1 Allison LCT1000 Crate Transmission Package is a no-brainer. Built specifically for 4WD trucks with PTO, this transmission setup is ready to handle serious work, from towing heavy loads to daily driving with added durability and smoother shifting. ATS includes its renowned Five Star torque converter and a deep transmission pan that not only holds more fluid, but also helps keep temps down when the pressure is on. Whether you're hauling gear through the mountains or just want your truck to drive like new again, this kit delivers a clear improvement over stock. Every component is engineered to work together, eliminating guesswork and ensuring reliability you can trust. The package is perfect for owners looking to extend the life of their drivetrain without going full race mode. It’s all about smoother shifts, stronger internals, and peace of mind every time you fire up your truck.

Designed For Durability And Engineered For Demanding Loads

The ATS Stage 1 Crate Transmission for 2004.5-2005 GM 2500HD and 3500HD trucks with the LLY Duramax and 4WD is more than a replacement, it’s an upgrade in every sense. This system features a fully reworked Allison LCT1000 performance transmission designed to manage increased power and torque levels without compromising drivability. The included ATS Five Star torque converter uses a multi-disc design to efficiently transfer power and reduce slippage under load. A deep transmission pan enhances cooling and increases fluid capacity, crucial for keeping internal temps stable during long hauls or under heavy throttle. This version also supports PTO functionality, making it a strong choice for commercial or vocational trucks. Every part of the system is engineered to maintain optimal pressure and improve clutch engagement, promoting longer transmission life and more responsive shifts. For Duramax owners pushing their trucks harder than stock, this transmission is a dependable, well-rounded solution.

Fits: 2004, 2005 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LLY PTO 4WD

Notes:

• Compatible with 2004.5-2005 GM 2500HD/3500HD trucks
• Designed specifically for LLY Duramax 6.6L engines
• Supports 4WD applications with Power Take-Off (PTO)
• Includes ATS Five Star Torque Converter for better power transfer
• Comes with ATS Deep Transmission Pan for improved cooling
• Ships with a performance-built ATS LCT1000 transmission
• Ideal for trucks needing enhanced towing and daily drivability
• $500 shipping surcharge will be applied at checkout
• Transmission is intended as a direct-fit crate solution
• Suited for trucks with stock or moderately upgraded power levels