Allison Trim Valve Kit

Features

• Allison Trim Valve Kit designed for 2001–2005 GM 6.6L Duramax

• Improves shifting performance and transmission reliability

• Designed to enhance transmission pressure regulation for smoother shifts

• Ideal for performance applications and heavy towing

• High-quality construction for durability and long-lasting use

• Easy installation with direct replacement for factory trim valve

Product Overview
The ATS 303-904-4248 Allison Trim Valve Kit is engineered for 2001–2005 GM 6.6L Duramax trucks equipped with the Allison 1000 transmission. This kit helps improve transmission shifting performance by providing better control over the trim valve, optimizing pressure regulation. It's ideal for performance applications, heavy-duty towing, and off-road use, ensuring smoother, more reliable shifts. The kit is designed for durability, providing a long-lasting solution for your transmission needs.

Fitment
2001, 2002, 2003, 2004, 2005 Chevrolet Silverado / GMC Sierra 2500HD / 3500HD 6.6L Duramax

Warranty
Backed by ATS Diesel Performance's limited manufacturer warranty. Refer to ATS for full warranty details.

Fitment Notes

• Direct replacement for factory trim valve

• Designed to improve shifting performance, especially under heavy load

• Professional installation recommended for optimal performance and functionality