Factory radiator hoses were never date coded. Most years would have the part number, the Pentastar emblem and possibly a tracer line that ran the length of the hose. For the purist, a NOS hose is a must, but they are becoming next to impossible to locate. The original hoses had almost a rough or pebbled finish where as the reproductions are of the slick style as found on most modern hoses. I am pretty sure that Frank Badalason is the sole supplier of licensed hoses from Chrysler. For heater hoses, check with your favorite vendor. These hoses come from one supplier as well and they sell to the larger established vendors. These hoses carry the correct grooves, part numbers and vendor codes. The stenciling on these hoses were duplicated from samples collected over the years and you have to take into consideration that vendor codes for date codes changed daily, so there is nobody who can duplicate all of the different configurations of the heater hoses unless you have a stencil made up and you apply your own markings from a hose that you know that was on the car from day one.