The Motobilt Jeep YJ Dana 30 front axle block off plate is used when converting your YJ disconnect front axle to a solid one piece axle. The YJ disconnect front axle is notorious for not engaging the front axle and leaving you with only 2wd. A Jeep TJ front one piece front axle is installed to eliminate the 2 piece design that relies on a shift fork that is vacuum actuated. Once the axle shaft from a TJ is installed you will remove the factory shift fork mechanism.
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