Since 1988, the NP231 has been the Command Trac transfer case used in Cherokees (XJ), Comanches (MJ), and Wranglers (YJ). It has been the Command Trac transfer case in the Grand Cherokee (ZJ) since its introduction. The new Wrangler (TJ) continues to use the NP231. 1987-95 YJ and 1997-04 TJ Wrangler rear of case has circular I.D. tag. Tag has model number, assembly number, serial number and low range ratio. Some 1987 Wranglers came with NP207. Your ZJ transfer case is a hardworking, durable and powerful piece of art. Designed to transfer power from your transmission to your drive shaft, your transfer case makes it possible for you to cruise smoothly in four-wheel and all-wheel, both on the road and off. If your transfer case takes a dive on you, you're SOL, and while your friends are cruising through the muck, you'll be sitting in the garage waiting on some good news. Don't play the waiting game, and replace your transfer case with a durable, aftermarket replacement part from 4WheelParts.com.
How to Tell if Your Transfer Case Has Gone Bad
A bad transfer case is a wild card, and the symptoms of a failing case can vary significantly. Some jeepers claim that it becomes difficult to shift gears, while others report a high-pitched squeal or other unusual noises. However, one common symptom is the random shifting of gears mid drive. If you're on the road and go from 2 high to 4 low without shifting gears yourself, chances are your transfer case is turning bad and that it's time for a replacement.
The Parts You Need for a Better Ride
At 4 Wheel Parts, we sell all the parts you need to bring your rig to the next level. Whether you're in the market for a 2002 Jeep Grand Cherokee transfer case, a 2007 Jeep Grand Cherokee transfer case or a 95 Jeep Grand Cherokee transfer case, we have what you need in stock. If we don't, well, ask us to place an order and we'll be happy to oblige.
Our goal is to help jeepers live life in the fast lane. No waiting on slow shipping. No waiting for the price to be right. No waiting for the right parts to come in. When you're ready to beef up your rig, you don't need to wait until payday. Our inventory is the most affordable on the market so that you can get back behind the wheel in record time, and without breaking the bank.
If you're ready to put the power back in your wheels, pick up your new transfer case for Jeep Grand Cherokee today.
Crown Automotive NP231 Transfer Case Front Output Shaft
Advance Adapters has developed this Dana 20 Heavy-Duty Output Shaft to eliminate the weaker 1-1/8? dia. shaft and replace it with the ultra-strong 1-3/8? dia. 32 spline one. It includes a 1310 Non-CV yoke and will work on all Dana 20 transfer cases. The overall length of the new tail housing to the center of the yoke is 7?. As an added bonus, the kit allows the use of different speedometer pinions to compensate for larger tires or gear changes. It can be added during a rebuild with lower gears or as an upgrade to a stock case.