Allison C5 Clutch Pack

Features:

• Direct replacement for worn C5 clutch pack
• Designed for Allison 1000 transmissions
• Increased torque capacity and durability
• Improves shift feel and clutch engagement
• High heat resistance for heavy-duty use
• Ideal for rebuilds or performance upgrades
• Maintains proper piston travel
• Built for diesel towing and hauling
• Manufactured by ATS for quality assurance
• Enhanced reliability under high load
• Perfect for transmission overhauls

Premium Replacement Clutch Kit for GM 6.6L Duramax

If your Allison 1000 transmission isn’t shifting quite like it used to, chances are your C5 clutch pack is worn down and in need of attention. The ATS C5 Clutch Pack is a direct-fit replacement built specifically for 2001–2010 GM 2500HD and 3500HD trucks equipped with the 6.6L Duramax. Whether you’re rebuilding your transmission after years of towing and hauling, or just looking to beef up the internals for improved reliability, this clutch pack is a smart upgrade. What sets this kit apart is its high-quality construction and design focus on both strength and longevity. ATS uses performance-grade friction materials paired with precision-engineered steels to ensure each engagement is smooth and consistent, even under high torque loads. It’s built to handle heat far better than factory components, which means less wear and tear and longer intervals between maintenance. That heat resistance also helps prevent clutch fade when you’re pushing your truck hard—like towing a fifth-wheel, climbing grades, or launching with added horsepower.

High-Quality Construction & Design

This C5 pack also maintains the proper piston travel for the clutch apply circuit, so you retain the factory shift feel while getting a noticeable bump in reliability. It’s an ideal choice for anyone already upgrading their transmission or simply looking to restore OEM-level function without sacrificing durability. If you're the kind of owner who plans to keep your Duramax working hard for years to come, upgrading with ATS components ensures you’re not cutting corners. From work truck builds to weekend haulers with extra horsepower, this clutch pack has proven itself on and off the road. It's a simple swap with big results—and the peace of mind that comes from quality parts built by a name trusted in diesel performance.

Fits: 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax