Fits: 2001 thru 2015 Chevy Silverado/GMC Sierra 2500HD/3500HD LBZ/LLY/LBZ/LMM/LML Duramax Diesel

AAM ring and pinion gear sets are uniquely designed to match the requirements the OEM designated for your specific vehicle. All performance factors for the size and weight of the specific vehicle must be taken into account. Our innovative "Two-Cut" manufacturing process ensures the lowest tolerances possible for the quiet operation required by our OEM customers. This "Two-Cut" design also allows for easier set up in the aftermarket replacement business. The combination of materials, heat treating and cut geometry allows for a gear set that has ten-times the life of a non-OE gear set.