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SKU:303-900-4248
ATS Allison Performance Valve Body Fits 2001-2010 6.6L Duramax
ATS Allison Performance Valve Body Fits 2001-2010 6.6L Duramax

Description
ATS Allison Performance Valve Body for 2001-2010 6.6L Duramax
The ATS Allison Performance Valve Body is designed for 2001-2010 GM 6.6L Duramax trucks, providing increased hydraulic efficiency, improved shift quality, and enhanced durability. Engineered for towing, high-performance, and daily driving applications, this valve body upgrade ensures better transmission response and longevity.
Reinforced Strength and Fluid Control
Manufactured with precision-machined components, the ATS Allison Performance Valve Body eliminates internal leakage and optimizes fluid flow. The improved hydraulic circuit design ensures stronger clutch engagement, reducing transmission slip and enhancing overall performance.
Comprehensive Performance Upgrade
This performance valve body increases line pressure to provide firmer shifts and improved torque capacity. The advanced fluid management system prevents excessive heat buildup, extending the transmission’s lifespan under heavy load conditions.
Key Features:
Specifically designed for 2001-2010 GM 6.6L Duramax trucks equipped with Allison transmissions, this valve body upgrade ensures improved shift quality and reduced wear. The reinforced hydraulic circuits enhance clutch engagement and minimize internal fluid cross-leakage. Optimized for heavy towing, high-performance use, and daily driving, it delivers smoother gear transitions and improved power transfer. The increased line pressure and enhanced fluid flow provide better responsiveness and reliability under demanding conditions.
Optimized for Heavy-Duty Applications
Whether towing, hauling, or driving under high-performance conditions, the ATS Allison Performance Valve Body enhances shift control and extends transmission durability. The precision-engineered design ensures reliable operation in extreme conditions.
Built for Long-Term Performance
Designed to handle increased torque loads and high-stress applications, this valve body offers a direct replacement solution with superior performance over stock components. With improved fluid management and reinforced internals, it is an essential upgrade for Allison-equipped Duramax trucks.
Upgrade your 6.6L Duramax with the ATS Allison Performance Valve Body for improved shift quality, better fluid control, and increased durability under all driving conditions.
Fitments
2001 Chevrolet/GMC Duramax LB7
2002 Chevrolet/GMC Duramax LB7
2003 Chevrolet/GMC Duramax LB7
2004 Chevrolet/GMC Duramax LB7
2004.5 Chevrolet/GMC: Duramax LLY
2005 Chevrolet/GMC: Duramax LLY
2006 Chevrolet/GMC: Duramax LBZ
2007 Chevrolet/GMC: Duramax LBZ
2007.5 Chevrolet/GMC: Duramax LMM
2008 Chevrolet/GMC: Duramax LMM
2009 Chevrolet/GMC: Duramax LMM
2010 Chevrolet/GMC: Duramax LMM
Instructions
Specifications
SKU: 303-900-4248
GTIN: 303-900-4248-FSMF
Manufacture Name: ATS Diesel Performance
Shipping Weight: 16
Shipping Length: 21
Shipping Width: 15
Shipping Height: 8
EO Number:
Cross Reference #
Warranty
ATS LIMITED PRODUCT WARRANTY
ATS Transmission packages carry a ONE to FIVE YEAR Warranty. There are several exceptions, so refer to the Warranty’s specific terms and conditions . All labor, shipping, or any other charges associated with the product and the product’s failure are not covered under Warranty. Labor and/or shipping charges will not be refunded under any circumstance. After the one-year anniversary date of the original purchase, there is a limited parts replacement Warranty only. Transmissions that are purchased separately outside of a transmission package / stage and are installed without an ATS torque converter carry a 1 year parts only warranty and there is no labor or shipping allowance for transmission only purchases.
In the event of a product failure, the consumer must return the defective product to ATS for inspection before a replacement is sent to the consumer. After ATS inspects the product and completes the failure analysis, the inspection officer at ATS will provide written documentation stating the condition of the product and determine, to the best of his or her ability, what caused the malfunction or complaint. Based on the findings of the inspection report, ATS will determine whether there is a valid Warranty claim. Should a consumer require immediate service, and chooses not to wait for their product to be returned to ATS for inspection, service, and potential repair or replacement, the consumer can purchase a replacement product from ATS. The consumer must pay the full current MSRP, the applicable core charge, and shipping to and from ATS’ shop. When the defective product arrives, ATS will refund the core charge and inspect the product. During inspection, ATS will assess the product for warrantable damage. If the original product has indeed failed under the terms of the original Warranty, ATS will refund the full purchase price for the replacement product only. If the product has failed due to any issue not covered under the original Warranty, ATS will assess charges to the consumer based on any parts necessary to return the product to nominal ATS standards. ATS will deduct the total cost of required parts from the replacement product’s purchase price, and the consumer will be refunded the difference (if any) between the purchase price paid for the replacement product and the cost of parts.
If the consumer can wait for their product to be returned to ATS for inspection, service, and potential repair or replacement, the consumer pays shipping to and from ATS’ shop. When the defective product arrives in Colorado, ATS will inspect the product. ATS will then assess the product for warrantable damage. If the product has failed under the terms of the original Warranty contract, ATS will repair or replace the product – at ATS’s discretion. If the product has failed due to any issue not covered under the original Warranty, ATS will assess charges to the consumer based on any parts necessary to return the product to nominal ATS standards. ATS will bill the consumer for the total cost of parts required for repair of the product, and shipping to and from Colorado, prior to the repaired/replaced product being sent to the consumer.
California Proposition 65 Warning
California Proposition 65 Warning - P65warnings.ca.gov
303-900-4248
ATS Allison Performance Valve Body Fits 2001-2010 6.6L Duramax
ATS Allison Performance Valve Body for 2001-2010 6.6L Duramax
The ATS Allison Performance Valve Body is designed for 2001-2010 GM 6.6L Duramax trucks, providing increased hydraulic efficiency, improved shift quality, and enhanced durability. Engineered for towing, high-performance, and daily driving applications, this valve body upgrade ensures better transmission response and longevity.
Reinforced Strength and Fluid Control
Manufactured with precision-machined components, the ATS Allison Performance Valve Body eliminates internal leakage and optimizes fluid flow. The improved hydraulic circuit design ensures stronger clutch engagement, reducing transmission slip and enhancing overall performance.
Comprehensive Performance Upgrade
This performance valve body increases line pressure to provide firmer shifts and improved torque capacity. The advanced fluid management system prevents excessive heat buildup, extending the transmission’s lifespan under heavy load conditions.
Key Features:
Specifically designed for 2001-2010 GM 6.6L Duramax trucks equipped with Allison transmissions, this valve body upgrade ensures improved shift quality and reduced wear. The reinforced hydraulic circuits enhance clutch engagement and minimize internal fluid cross-leakage. Optimized for heavy towing, high-performance use, and daily driving, it delivers smoother gear transitions and improved power transfer. The increased line pressure and enhanced fluid flow provide better responsiveness and reliability under demanding conditions.
Optimized for Heavy-Duty Applications
Whether towing, hauling, or driving under high-performance conditions, the ATS Allison Performance Valve Body enhances shift control and extends transmission durability. The precision-engineered design ensures reliable operation in extreme conditions.
Built for Long-Term Performance
Designed to handle increased torque loads and high-stress applications, this valve body offers a direct replacement solution with superior performance over stock components. With improved fluid management and reinforced internals, it is an essential upgrade for Allison-equipped Duramax trucks.
Upgrade your 6.6L Duramax with the ATS Allison Performance Valve Body for improved shift quality, better fluid control, and increased durability under all driving conditions.
ATS Allison Performance Valve Body Fits 2001-2010 6.6L Duramax