Jeep Wrangler JK Front Driveshaft 938-102 for 3.8L 4WD

This is a complete front driveshaft assembly for the 2007-2011 Jeep Wrangler JK with the 3.8L V6 and four-wheel drive. It is listed for trucks from stock height up to a 6 inch lift. It replaces Mopar 52853317AA, 52853317AB, 52853317AC, 52853317AD, 52853317AE, 52853321AC and 52753319AC, and cross-references to Dorman 938-102.

The shaft has a flange-mount joint at each end and a booted slip section in the middle so it can change length as the axle cycles.

On a JK, the front shaft often fails at the transfer case end. The boot tears, the joint dries out, and it starts to click or bind, often after a lift has increased the joint angle. Grease slung onto the skid plate, a clicking noise in 4WD, or a vibration that only shows up in 4WD all point to this shaft. If the truck is lifted more than a few inches, correct the front pinion angle as well, or the new shaft will wear the same way.

To install, mark the flanges, remove the bolts at the transfer case output and the front axle pinion flange, and slide the shaft out. Install the new shaft, torque the flange bolts to the factory spec, cycle the suspension to confirm there is no binding at full droop, and road test in 4WD.