The Tera44 Rubicon HD front axle housing is perfect for replacing a damaged or worn factory JL Rubicon 44 axle housing. The axle housing includes front axle shafts, and TeraFlex HD Ball Joints. Transfer your existing outer components (unit bearings, knuckle assembly, brakes, sensors) to the new housing! Compatible with JL Dana 44 AdvanTEK (M210) internal components.