Bosch DLLA155P277 Injector Nozzle

The DLLA155P277 is a precision-engineered diesel injector nozzle featuring a 155-degree spray angle and long-hole (DLLA) nozzle geometry. It is manufactured to Bosch OEM standards for use in P-type nozzle holders within Bosch P7100 mechanical rotary fuel injection pumps. The nozzle body is constructed from hardened tool steel to withstand high-cycle fatigue and abrasive wear in high-pressure fuel environments. This nozzle serves as a direct replacement for Cummins OEM part numbers 3911185 and 3919350. Primary applications include 1989-1993 Dodge Ram D250 and D350 trucks equipped with the 5.9L 12-valve 6BT/6BTA engine, as well as various industrial and construction equipment powered by the Cummins 6BT platform. Cross-references include Meat & Doria MDLLA155P277 and aftermarket designations CDLLA155P277 and CMCM4222.