ATS 309-853-4272 Stage 5 Allison LCT1000 Crate Transmission | 2003-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7 PTO 2WD

• Features

  • Stage 5 Allison LCT1000 crate transmission for 2003–2004 GM 6.6L Duramax LB7

  • Designed for 2WD models with PTO (Power Take-Off)

  • Upgraded clutch packs and components to handle higher torque and horsepower

  • Enhanced durability and shift quality for high-performance and heavy-duty applications

  • Precision-engineered for improved fluid flow, cooling, and reliability under load

  • Fully remanufactured and ready to install with all necessary components

  Product Overview
  The ATS 309-853-4272 Stage 5 Allison LCT1000 Crate Transmission is a high-performance upgrade for 2003–2004 GM 6.6L Duramax LB7 trucks with 2WD and PTO. Engineered to handle increased horsepower and torque, this transmission offers superior durability and smooth shifting under demanding conditions. The Stage 5 transmission includes upgraded clutch packs, improved valve bodies, and is designed for heavy-duty towing, performance builds, and off-road applications. Its robust design ensures that it can withstand extreme loads and continue to perform reliably for years.

  Fitment
  2003, 2004 GM 6.6L Duramax LB7 2WD with PTO

  Warranty
  Backed by ATS Diesel Performance’s limited manufacturer warranty. Refer to ATS for full warranty details.

  Fitment Notes

  • Designed for 2WD models with PTO functionality

  • Ideal for performance, heavy-duty towing, and off-road applications

  • Professional installation is recommended to ensure optimal performance and longevity

Note: A $500 shipping surcharge will be added.