The factory transfer case skid plate, if it's even present, really doesn't do much to protect the transfer case. If you do even mild off-roading, you should seriously consider upgrading to Rusty's Transfer Case Skid Plate. Trail Tested Tough, Rusty's ZJ skid plate is constructed of 1/4" thick laser-cut steel and mounts to both the t-case crossmember and the unibody for a solid protection. A black powder coated finish provides lasting durability and good looks. It comes with all the necessary hardware and complete installation instructions.
We have different versions for the 231 and 242 transfer cases. This version is for the 242 / 247 / 249 transfer cases and has an additional bend to match the crossmember and lower drop of the 242 transfer case. If you have done an NP231 swap, use RS-JS15-ZJ.