Axles
Front Axles
Dana 30 high pinion 1984-1999. Reverse cut gears, 27 spline, 1.16" diameter shafts, 7.13" ring gear. Non-ABS axles are vacuum disconnect through 1991. All 1992-2001 are non-disconnect. 1989-95 with ABS and all 1995-2001 have 5-297x u-joints, all others have 5-260x u-joints.
Dana 30 low pinion TJ style used 2000-01. Standard cut gears - 27 spline, 1.16" diameter shafts, 7.13" ring gear, 5-297x u-joints.
5-297x and 5-760x u-joints interchange.
Rear Axles
Note: Dana 35 axles are sometimes referred to as Dana 35C - The "C" does not stand for c-clip. It stands for "custom" meaning it came from Dana unfinished.
Note: Chrysler 8.25 c-clip axles - none of these axles were used on XJs with ABS brakes. If you have ABS, you have the Dana 35. Without ABS you could have either axle, Chry 8.25 or D35.
Dana 35 non c-clip - 27 spline, 1.18" diameter shafts, 7.58" ring gear, 2.62" axle tube - used 84-89
Dana 35 c-clip - 27 spline, 1.18" diameter shafts, 7.58" ring gear, 2.62" axle tube - used 90-01
Chrysler 8.25 - 27 spline, 1.17" diameter shafts, 8.25" ring gear, 3" axle tube - used 91-96
Chrysler 8.25 - 29 spline, 1.21" diameter shafts, 8.25" ring gear, 3" axle tube - used 97-01
Dana 44 non c-clip - 30 spline, 1.31" diameter shafts, 8.5" ring gear, 2.75" axle tube - used 87-89 on some (not all) XJs equipped with towing package.