Product Description
The ATS 303-904-4308 Allison Trim Valve Kit is a performance upgrade designed for 2006-2010 6.6L Duramax trucks equipped with the Allison 1000 transmission. This kit enhances transmission shift quality, reduces slip, and improves clutch apply timing for more efficient power transfer.
Factory trim valves can contribute to soft or inconsistent shifts, especially in high-mileage or performance applications. This ATS trim valve kit recalibrates hydraulic pressure within the valve body, delivering firmer, quicker shifts and improved transmission responsiveness.
Ideal for towing, daily driving, or performance builds, this upgrade helps extend transmission life while improving overall drivability. It’s a proven solution for drivers looking to eliminate shift flare and maximize the efficiency of their Allison transmission.
FAQ
Q: What does a trim valve kit do?
A: It modifies the hydraulic control system inside the transmission to improve shift timing, firmness, and overall performance.
Q: Will this fix soft or slipping shifts?
A: Yes, this kit is designed to reduce shift slip and provide firmer, more consistent gear changes.
Q: Is this good for towing?
A: Absolutely. Improved shift control helps reduce heat and wear, making it ideal for towing applications.
Q: Do I need to remove the transmission to install this?
A: Installation typically involves accessing the valve body and does not require full transmission removal, but professional installation is recommended.
Fitment
- 2006 Chevrolet Silverado 2500HD/3500HD 6.6L LBZ Duramax
- 2006 GMC Sierra 2500HD/3500HD 6.6L LBZ Duramax
- 2007 Chevrolet Silverado 2500HD/3500HD 6.6L LBZ Duramax
- 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
- Improves shift firmness and consistency
- Reduces shift flare and clutch slippage
- Enhances hydraulic pressure control
- Optimizes transmission performance under load
- Ideal for towing, daily driving, and performance use
- Designed for Allison 1000 transmissions
Specifications for ATS 303-904-4308
| Specification | Details |
|---|---|
| Part Number | 303-904-4308 |
| UPC | Not Available |
| GTIN | Not Available |
| Product Type | Allison Trim Valve Kit |
| Transmission Compatibility | Allison 1000 |
| Engine Compatibility | 6.6L Duramax (LBZ, LMM) |
| Model Years | 2006-2010 |
| Function | Improves shift timing and hydraulic control |
| Installation | Valve body access required |
| Shipping Info | Standard Ground Shipping |
| Warranty | Limited Manufacturer Warranty |
| California Prop 65 | WARNING: Cancer and Reproductive Harm – www.P65Warnings.ca.gov |
