2001-2005 Sierra/Silverado 2500HD/3500HD Allison Firepunk F1 Transmission Package Features: Great For Mildly Modified Trucks Up To 750HP 2-Year Unlimited Mileage, 100% Workmanship Warranty Build List: All New Gaskets & Seals Allison Internal Filter Firepunk Filter Lock Allison External Filter with Magnet New Allison Bearings...

2001-2005 Sierra/Silverado 2500HD/3500HD Allison Firepunk F2 Transmission Package Features: Great For Mildly Modified Trucks Up To 900HP 2-Year Unlimited Mileage, 100% Workmanship Warranty Build List: All New Gaskets & Seals Allison Internal Filter Firepunk Filter Lock Allison External Filter with Magnet New Allison Bearings...

2001-2005 Firepunk Proven A1000 Allison Transmission Features: Great For Highly Modified Trucks Up To 1000HP 2-Year Unlimited Mileage, 100% Workmanship Warranty Build List: All New Gaskets & Seals Allison Internal Filter Firepunk Filter Lock Allison External Filter with Magnet New Allison Bearings Rebuilt or...