Factory Axle Guide

 
Model 
Year 
Application
Ring Gear Dia.
Axle Spline
AMC 20 rear  1976-86  CJ, SJ  8-7/8" 29/1.25"
Chrysler 8.25  1989-10  XJ, KJ, WJ, WG, WH, WK  8-1/4"  27-29/1.20" 
23-2 rear  1941-46  CJ, GPW, MB  7-3/4"  10/1.00"
25 front 1941-65 CJ, PU, SW 7-3/4" 10/1.13"
27 front 1966-71 CJ, SJ(G), VJ 7-1/8" 10/1.13"
30 front 1972-06 CJ, YJ, TJ, XJ, ZJ, ZG 7-1/8" 27/1.13"
30 rear 1967-68 VJ 7-1/8" 27/1.13"
35 rear 1987-06 TJ, YJ, XJ, ZJ 7-9/16" 27/1.13"
41-1 rear 1946-50 CJ  7-3/4"  10/1.00"
44-2 rear 1950-70 CJ, FC, PU, SJ(G) 8-1/2" 19/1.25"
44 rear 1970-06 CJ, FC, SJ(G), SJ, TJ, ZJ, ZG 8-1/2" 30/1.31"
44F front 1957-70 FC, SJ 8-1/2" 19/1.25"
44 front 2003-06 LJ, TJ Rubicon 8-1/2" 30/1.31"
53 rear 1957-64 FC, PU, SJ(G) 9-3/4" 19/1.19"