Product Description
The ATS 309-815-4440 Stage 1 Allison LCT1000 Transmission Package is a reliable, performance-focused upgrade for 2017–2019 6.6L L5P Duramax trucks equipped with 4WD and PTO. Designed as a heavy-duty replacement for the factory transmission, this package improves durability, shift quality, and overall drivability while maintaining excellent performance for daily driving and towing applications.
ATS enhances the factory Allison platform with upgraded clutch packs, improved valve body calibration, and precision assembly to address common wear points and extend transmission life. This Stage 1 package is ideal for stock to mildly modified trucks that need a dependable transmission capable of handling increased load demands without sacrificing smooth operation.
With PTO compatibility and improved internal strength, this transmission is perfect for work trucks, towing setups, and fleet vehicles that demand reliability under consistent use.
FAQ
Q: What is the difference between Stage 1 and higher ATS stages?
A: Stage 1 is designed for stock or lightly modified trucks, focusing on improved reliability and longevity rather than extreme horsepower capacity.
Q: Is this transmission suitable for towing?
A: Yes, this transmission is ideal for towing applications and improves durability over the factory unit.
Q: Does this unit support PTO operation?
A: Yes, this package is specifically configured for vehicles requiring PTO functionality.
Q: Do I need tuning with this transmission?
A: No tuning is required, but tuning can enhance performance depending on your setup.
Fitment
- 2017 Chevrolet Silverado 2500HD/3500HD 6.6L L5P Duramax (4WD w/ PTO)
- 2017 GMC Sierra 2500HD/3500HD 6.6L L5P Duramax (4WD w/ PTO)
- 2018 Chevrolet Silverado 2500HD/3500HD 6.6L L5P Duramax (4WD w/ PTO)
- 2018 GMC Sierra 2500HD/3500HD 6.6L L5P Duramax (4WD w/ PTO)
- 2019 Chevrolet Silverado 2500HD/3500HD 6.6L L5P Duramax (4WD w/ PTO)
- 2019 GMC Sierra 2500HD/3500HD 6.6L L5P Duramax (4WD w/ PTO)
Key Features
- Stage 1 performance build for stock and mild upgrades
- Upgraded clutch packs for increased durability
- Improved valve body calibration
- Enhanced shift quality and consistency
- PTO compatible design
- Built for towing, work trucks, and daily driving
- Direct replacement for factory Allison LCT1000
Specifications for ATS 309-815-4440
| Specification | Details |
|---|---|
| Part Number | 309-815-4440 |
| UPC | Not Available |
| GTIN | Not Available |
| Transmission Type | Allison LCT1000 Stage 1 |
| Drivetrain | 4WD |
| PTO Compatibility | Yes |
| Engine Compatibility | 6.6L Duramax L5P |
| Model Years | 2017 - 2019 |
| Horsepower Rating | Stock to Mild Builds |
| Shipping Weight | Approximately 400 lbs |
| Shipping Method | Freight (Core Charge Applies) |
| Warranty | 5 Year / 500,000 Mile Limited Warranty |
| California Prop 65 | WARNING: Cancer and Reproductive Harm – www.P65Warnings.ca.gov |
