Passenger Rear is going out on my 98, digging around I found it very difficult to find the part numbers for all the power lock actuators. Found some good information on Team Cherokee parts site...

For the 1997 to 2001
OE POWER DOOR LOCK LATCH#'S
OE DRIVER FRT LOCK#4798915AC
OE PASS FRT LOCK#4798914AC
OE DRIVER REAR LOCK#55235203AC
OE PASS REAR LOCK#55235202AC