Main part 2872288 injector fuel supply connector has alternative references 2872395 and 3975703, fitting Cummins B3.3, ISBE, QSB4.5, QSB6.7, ISD6.7, QSL9, QSC8.3, ISL9 and ISC engines. It links high?pressure fuel pipes and injectors with zero?leak threaded joints. Hardened alloy material resists pressure shock for long?term stable fuel delivery.