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 manufacturer's specs for quality you can trust. This replacement differential pinion shim kit fits 07-18 Wrangler JK / JKU equipped with Dana 30 / Dana 44 standard 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 5066539AA