Fits Jeep:

Jeep Wrangler (JK) (2007-2016) w/ Dana 30 or 44 Front Axle; w/ Dana 35 or 44 Rear Axle. 
Jeep Grand Cherokee (WK) (2005-2010) w/ Chrysler 8.25 Rear Axle. 
Jeep Grand Cherokee (WJ) (1999-2004) w/ Dana 44 Rear Axle. 
Jeep Grand Cherokee (ZJ) (1994-1998) w/ Dana 44 Rear Axle. 
Jeep Commander (XK) (2006-2010) w/ Chrysler 8.25 Rear Axle. 
Jeep Liberty (KJ) (2002-2007) Front Axle; w/ Chrysler 8.25 Rear Axle. 
Jeep Liberty (KK) (2008-2012) Front Axle; w/ Chrysler 8.25 Rear Axle. 

Fits Vintage Jeep: 

Jeep CJ (1976-1986) w/ AMC 20 Rear Axle. 
Jeep SJ & J-Series (1980-1986) w/ AMC 20 Rear Axle. 

Fits Dodge: 

Dodge Nitro (KA) (2007-2011); Front Axle.