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

When you're working your Duramax LLY engine hard, especially with a heavy load or in performance applications, the transmission is under a lot of stress. This BD Diesel valve body is a direct replacement for your 2004-2006 Chevrolet Silverado 2500 HD or 3500, and GMC Sierra 2500 HD or 3500, that's been modified to handle more. It's designed to optimize performance and towing by improving how your Allison 1000 transmission shifts and handles power.

BD Diesel takes their exchange valve bodies and tunes them specifically for demanding use. They've updated the valve design and increased the size of the oil ports to allow for better fluid flow. New trim valves are installed to raise mainline pressure, which directly increases clutch holding capacity. This means your transmission can handle more torque without slipping, reducing wear and extending its life. The surfaces are hand-lapped to prevent internal leaks, ensuring consistent operation. You'll notice improved shift quality, making the truck feel more responsive, whether you're towing a trailer or just driving around town.

This kit includes the modified valve body and necessary hardware. BD Diesel also includes a UPS shipping label to return your old core unit for free within the USA, making the exchange process straightforward. It comes with a 12-month or 24,000-mile warranty for added peace of mind.