1993-1998 Jeep Grand Cherokee ZJ Transfer Cases

A ZJ that needs four-wheel drive to work reliably on trail needs a transfer case that shifts cleanly and holds its engagement under load, and 1993-1998 Jeep Grand Cherokee ZJ Transfer Cases cover both replacement units and the rebuild kits that restore a high-mileage unit to factory specification. The NP231 and NP242 cases in the ZJ are robust units that respond well to fresh fluid and seals long before they need full replacement.

 

Slip-yoke eliminators on the ZJ's NP231 are the supporting modification worth doing alongside any suspension lift since the factory slip yoke creates driveline vibration at angles that increase with ride height — addressing it at the same time avoids having to drop back into the drivetrain to fix it later. Rebuilt transfer cases are the right call when the original has developed chain stretch or mode fork wear that fluid and seals alone can't fix.

 

Transfer case condition determines whether a ZJ's four-wheel drive is an asset or a liability on the trail, and 1993-1998 Jeep Grand Cherokee ZJ Transfer Cases are what keep that system honest. Transmission and transfer case upgrade options are at 1993-1998 Jeep Grand Cherokee ZJ Transmission & Transfer Case Upgrades, front bumper options are at 1993-1998 Jeep Grand Cherokee ZJ Front Bumpers, and the full ZJ drivetrain parts are at 1993-1998 Jeep Grand Cherokee ZJ Drivetrain Parts.