Jeep Grand Cherokee WJ 4.7L Front Driveshaft 938-143

This is a complete front driveshaft for the Jeep Grand Cherokee WJ with the 4.7L V8 and an automatic transmission. It fits 1999-2003 4WD and 1999-2004 AWD models, and it is the version with a GKN-style CV joint at both ends. It replaces Mopar 52099498AB and 52099498AD and crosses to Dorman 938-143. The shaft is steel, 32.5 in. long with a 2 in. tube.

On the WJ the front shaft runs close to the exhaust, so the CV boots dry out, crack and sling grease. Once dirt gets into a joint it wears fast. You will hear a clunk when you shift from Park into Drive or Reverse, feel a vibration that gets worse with speed, or find grease sprayed across the floor pan and the transfer case. A joint that has lost its grease is usually past saving, so replacing the whole shaft is faster than rebuilding the joints.

Before you order, confirm that your old shaft has CV flanges at both ends and not a u-joint at one end. The 4.0L six-cylinder WJ uses a different shaft. When you install it, clean the flange faces at the transfer case and the front axle, replace any rusted or stretched bolts, and torque them to the factory spec. While the shaft is out, check the transfer case front output seal and the front pinion seal for leaks.