It is highly recommended to replace connector tubes when installing new injectors. High pressure fuel wears down the connector tube at the same time as the injector so if your injectors are beginning to function poorly, it's likely the tubes are in poor condition as well.
Genuine Bosch connector tubes are made from the highest quality materials, machined to precise tolerances. While cheaper connector tubes are available, they are made from softer grade material that can corrode and wear much faster. That material being forced through greatly reduces the life expectancy of the injector body and nozzle. We understand the want to be frugal but very much recommend the added insurance of using OEM when it comes down to replacing a full set of injectors.
-Cross Referance-
Cummins: 2872395, 2872393, 2872394, 4929864
Mopar: 5175565AC,68441874AA
Bosch: F00RJ01831
