Yukon Minimum install Kit for Jeep Wrangler JL Dana 30 Front, w/o Axle Seals. Yukon Minimum Installation Kit for Jeep Wrangler JL Dana 30 Front, without Axle Seals. Yukon Minimum Installation Kits are a low-cost solution for ring and pinion gear changes in newer vehicles where the bearings can be reused. Kits include all high-quality components for a smooth differential set up.