It appears there is a new part number for the #4 injector line for our 5. 9s. Geno's shows Cummins #4988808 is now #5289447. My local Dodge dealer confirmed the old number 05086874AB is now changed to 05086874AC, and the Mopar number is on backorder. I haven't found much info on this but was buying some spare parts when I came across this. I saw an picture someone posted (possibly ebay) and looks like the sandwiched blue grommet is replaced by a strap that wraps around the line.