Brand new Bosch connector tube with o-ring. This is a stock replacement for 5.9 engines 2003-2007. We recommend these be changed when replacing your injectors. Re-using old tubes can lead to leaks, contamination, and premature injector failure. Fits Cummins 5.9 2003-2007 Mopar Part # 5086874AB, 5175565AA Cummins Part # 3979419 Bosch Part # F 00R J01 572.