23520 Cam/Cas +/- 1.00°. This offset ball joint replaces the O.E. upper ball joint to provide camber and caster changes. 1984 - 2001 Cherokee. 1987 - 2018 Wrangler. 1993 - 2004 Grand Cherokee. Use Installation Sleeve set 23580 in conjunction with 72509 Ball Joint Press for removal and installation of all ball joints.