OMIX proudly offers high - quality replacement parts so that you can keep you part of the Jeep heritage on the road - parts that always meet or exceed manufacturers specs for quality you can trust. This replacement differential pinion shim kit fits 07 - 18 Wrangler JK JKU Rubicon models equipped with Dana 44 front or rear locking differentials. Kit contains shims of varying thicknesses that are vital in the proper adjustment of preload and backlash of the front differential carrier. Replaces OE 68003556AA