Product Description
The ATS 308-805-4248 Allison C5 Clutch Pack is a high-performance upgrade designed for 2001-2010 6.6L Duramax trucks equipped with the Allison 1000 transmission. Built to handle increased power and torque, this upgraded clutch pack addresses one of the common weak points in the factory transmission.
As power levels increase, the factory C5 clutch pack can slip or fail under load. ATS solves this issue by utilizing higher quality friction materials and improved clutch capacity, allowing for better holding power and increased durability. This upgrade is essential for tuned, towing, or performance-oriented Duramax builds.
Engineered for reliability and consistent engagement, the ATS C5 clutch pack helps extend transmission life while improving overall performance under demanding conditions.
FAQ
Q: What does the C5 clutch pack do?
A: The C5 clutch pack is responsible for holding power in specific gear ranges inside the Allison transmission, especially under load.
Q: Why upgrade the C5 clutch pack?
A: The factory C5 clutch can slip under increased power. Upgrading improves holding capacity and prevents premature failure.
Q: Is this needed for performance builds?
A: Yes, this is a critical upgrade for trucks with tuning, added horsepower, or heavy towing demands.
Q: Is professional installation recommended?
A: Yes, installation requires transmission disassembly and should be performed by a qualified technician.
Fitment
- 2001-2004 Chevrolet Silverado 2500HD/3500HD 6.6L LB7 Duramax
- 2001-2004 GMC Sierra 2500HD/3500HD 6.6L LB7 Duramax
- 2004.5-2005 Chevrolet Silverado 2500HD/3500HD 6.6L LLY Duramax
- 2004.5-2005 GMC Sierra 2500HD/3500HD 6.6L LLY Duramax
- 2006-2007 Chevrolet Silverado 2500HD/3500HD 6.6L LBZ Duramax
- 2006-2007 GMC Sierra 2500HD/3500HD 6.6L LBZ Duramax
- 2007.5-2010 Chevrolet Silverado 2500HD/3500HD 6.6L LMM Duramax
- 2007.5-2010 GMC Sierra 2500HD/3500HD 6.6L LMM Duramax
Key Features
- Upgraded C5 clutch pack for Allison 1000 transmissions
- Increased holding capacity over stock
- Improved friction materials for durability
- Reduces clutch slip under high load
- Ideal for towing, tuning, and performance applications
- Helps extend transmission life
Specifications for ATS 308-805-4248
| Specification | Details |
|---|---|
| Part Number | 308-805-4248 |
| UPC | Not Available |
| GTIN | Not Available |
| Product Type | Transmission Clutch Pack (C5) |
| Transmission Compatibility | Allison 1000 |
| Engine Compatibility | 6.6L Duramax (LB7, LLY, LBZ, LMM) |
| Model Years | 2001-2010 |
| Function | Improves clutch holding capacity |
| Installation | Internal transmission component (professional install recommended) |
| Shipping Info | Standard Ground Shipping |
| Warranty | Limited Manufacturer Warranty |
| California Prop 65 | WARNING: Cancer and Reproductive Harm – www.P65Warnings.ca.gov |
