Think of your vehicle's diff cover as skin protecting your Jeep gears. Granted, it is a bit tougher skin, but when your ride goes off road it can be exposed to hazards that could puncture right through that protection.
Standard factory diff covers do a standard job of safeguarding those gears in most daily driving situations. Usually for light off road use as well. But if your plans include jacking up the vehicle, adding larger tires and attacking those harder blue and black trails, then it is definitely worth it to invest in a new heavy duty cover. These tough accessories are designed to take a hit and will fit just about all Jeep axles from Dana 30 up to 60 as well as the Chrysler 8.25. Some even fit with air locker systems. You also have a choice of color, from raw steel, black, powder coat, aluminum, red and stainless.
