Nitro Gear & Axle AAM11.5-373-NG AAM 11.5 Ring & Pinion Set - 3.73 Ratio | 01-09 GM 2500/3500HD & 03-09 Dodge 2500/3500

Nitro gears are manufactured from 8620 steel gear forgings in the same manufacturing facilities as GM, Dodge, Ford & Toyota. They are precision machined using computer controlled processes, heat treated, CNC triple-lapped and Rockwell tested for hardness. These extra steps ensure excellent fitment, ideal contact pattern and smooth, quiet operation.

Vehicle Fitments:

• 2003-2009 Dodge Ram 2500 w/ Cummins Diesel
• 2003-2009 Dodge Ram 3500 w/ Cummins Diesel
• 2001-2009 Chevrolet Silverado 2500HD w/ Duramax
• 2001-2006 Chevrolet Silverado 3500HD w/ Duramax
• 2001-2009 GMC Sierra 2500HD w/ Duramax
• 2001-2009 GMC Sierra3500HD w/ Duramax
• 2001-2006 Chevrolet Silverado 2500HD Vortec 8.1L Big Block
• 2001-2006 Chevrolet Silverado 3500HD Vortec 8.1L Big Block
• 2001-2007 GMC Sierra 2500HD Vortec 8.1L Big Block
• 2001-2007 GMC Sierra3500HD Vortec 8.1L Big Block