BD Diesel 1030471 Allison 1000 Performance Valve Body 2004-2006 Duramax LLY

The BD Diesel 1030471 is a modified, tuned, and tested replacement valve body designed specifically for the Allison 1000 transmission in 2004.5-2006 Chevrolet Silverado and GMC Sierra trucks equipped with the 6.6L Duramax LLY engine. This performance valve body prevents clutch slippage and significantly improves transmission durability in towing and high-performance applications.

Key Features:

• New trim valves installed to increase mainline pressure, providing more clamping force on clutch plates
• Hand-lapped surfaces prevent internal leakage that can cause shift irregularities and clutch pack pressure loss
• Revised valve design with larger oil ports and proprietary governor piston dimensions
• Newly designed anodized aluminum manual valve with new springs for improved shift quality
• Improved shift quality, increased clutch holding capacity, reduced wear, and extended transmission life

This exchange valve body saves installation time over installing a shift kit, with installation typically completed in less than two hours. The BD Allison valve body is recommended for trucks that tow moderate loads or vehicles with power increases of 90 to 120 rear wheel horsepower. This product requires a $450 refundable core deposit and does not require an Executive Order in California and is legal for sale and use in all 50 states. Backed by a 12-month or 24,000-mile warranty.