There's all kinds of numbers for parts like this. Do you really think Chrysler built hundreds of thousands of trucks, but found one wrong unit somewhere and decided to put it into one truck?
Every time there is an improvement made in the design or with beefed up internal parts, it gets a new part number. A rebuilt / remanufactured unit has a different part number than a new one too.
Some transfer cases are heavier duty for bigger trucks. They will work fine in lighter trucks. Some shops only stock these heavier ones so they don't have to stock so many different part numbers.
You might also be looking at a casting number on your unit, which looks like a part number, but really isn't one. Part numbers for everything from brake pads to turn signal switches change all the time. Instead of worrying about part numbers, simply order a transfer case according to the application.
Monday, September 7th, 2009 AT 2:45 AM