Nitro gears are manufactured from 8620 steel gear forgings in the same manufacturing facilities as GM, Dodge, Ford and 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.
Details:

• Fits GM and Dodge
• Differential: AAM 11.5 Inch, 14 Bolt
• Gear Ratio: 5.13 Standard Rotation
• Tooth Count: 41/8
• Pinion Splines: 30
• Ring Gear Bolts: 12 (not included)
• Manufacturer: Nitro Gear and Axle
• Warranty: 2 Years
• Made From 8620 Steel
• CNC Triple Lapped
• Rockwell Tested For Hardness
• Sold As A Set

Vehicle Applications:

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