Fits 2011–2019 GM 2500HD / 3500HD with 6.6L Duramax (Allison 1000 Transmission)
When you need the ultimate in transmission performance and reliability, the ATS 313-907-4368 Allison Stage 7 Rebuild Kit delivers. Designed for high-horsepower Duramax applications, this comprehensive rebuild kit transforms your factory Allison 1000 into a race-ready, heavy-duty transmission capable of handling extreme torque, high towing loads, or aggressive tuning.
Whether you're daily driving, towing heavy, or hitting the track, the Stage 7 kit addresses all weak points with billet components, high-friction clutches, and upgraded hydraulics to provide the holding power and durability required in extreme diesel builds.
Key Features:
Complete high-performance rebuild kit for Allison 1000
Rated for extreme horsepower and torque applications
Ideal for racing, sled pulling, or high-performance street use
Includes upgraded clutches, steels, gaskets, seals, and billet components
Improves clutch holding capacity and transmission longevity
Designed to eliminate common Allison failure points under load
Developed and tested by ATS Diesel for proven performance
Kit Includes:
Billet input shaft
Performance clutch packs and steels
Gasket and seal kit
Heavy-duty C2 hub
Billet channel plate
Pressure regulator valve upgrades
Pump modifications (if applicable)
Full assembly instructions
Fitment:
2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019 Chevrolet Silverado 2500HD / 3500HD
2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019 GMC Sierra 2500HD / 3500HD
With 6.6L Duramax and Allison 1000 transmission
Warranty:
Backed by ATS Diesel’s limited warranty. Professional installation strongly recommended. Contact ATS for full terms.
Property | Values |
---|---|
Year Ranges | 2011-2019 |
Make | GM |
Model | Silverado/Sierra |
Series | 2500HD/3500HD |
Engine | 6.6L |
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