1999-2004 Jeep Grand Cherokee WJ Transfer Cases

Transfer case issues on the WJ announce themselves in specific ways — a hesitation or grind shifting into four-wheel drive, an unexpected drop out of range on a hill, or a sound from the drivetrain that wasn't there last season. Getting ahead of those signs with the right replacement unit or rebuild hardware is what 1999-2004 Jeep Grand Cherokee WJ Transfer Cases are about.

 

The NP231 transfer case in the WJ is a proven unit that responds well to chain replacement and fresh fluid before it needs a full swap — a stretched chain that slips under torque is a rebuild job, not a replacement, and catching it at the chain stage costs considerably less than waiting for secondary damage. Rebuilt units with upgraded internals are the choice for a WJ that has been lifted and sees sustained trail use, since the added angles and load cycles that come with lift and off-road use accelerate the wear that eventually takes out a stock-tolerance case.

 

NP231 chain service, rebuilt transfer cases, and the upgrade hardware that keeps four-wheel drive working reliably are what 1999-2004 Jeep Grand Cherokee WJ Transfer Cases cover. Transmission and transfer case upgrade options are at 1999-2004 Jeep Grand Cherokee WJ Transmission & Transfer Case Upgrades, the full drivetrain parts are at 1999-2004 Jeep Grand Cherokee WJ Drivetrain Parts, and axle and hub options are at 1999-2004 Jeep Grand Cherokee WJ Axles & Hubs.