USA Standard replacement Ring and Pinion gear set for Dana 44HD in 4.56 ratio. USA Standard ring and pinion sets are the right choice to add confidence to your install. USA Standard Gear offers a full line of ring and pinion sets for a variety of common and hard to find applications. USA standard gear offers a standard one year warranty against defects on their ring and pinion sets Features and Benefits: Fits Dana 44HD Differential 4.56 ratio Rear, thick Details: AAP_UDA_4: 65 Fitment Notes: Dana 44HD; 4.56 Ratio Dana 44HD; Corvette and Viper; 4.56 Ratio Application Summary: 1992-2010 Dodge Viper (Rear) (Drive: RWD / Note: Dana 44HD 4.56 Ratio) 1996-2004 Jeep Grand Cherokee (Rear) (Note: Dana 44HD 4.56 Ratio) 1985-1997 Chevrolet Corvette (Rear) (Note: Dana 44HD Corvette and Viper 4.56 Ratio, Dana 44HD 4.56 Ratio)