original Replacement Fuel Injector 155-1819 for 3412E 3126B 3512B Diesel Engine, for heavy duty diesel engine application, Compatible with 5110B Equipment original new injector

Precision fuel delivery is the focus of the 155-1819 diesel fuel injector, a precision injector assembly for 3412, 3412E, 3126B and 3512B diesel engines. Identified by OE number 155-1819, it is also cross-referenced as 20R-4148, 4CR01974, 198-4752 and 0R-9350. OEM and high-quality aftermarket options are available, making the part suitable for heavy-duty diesel engine replacement and fuel-system sourcing.

The injector delivers metered fuel into the combustion chamber at high pressure, atomizing diesel to support efficient combustion while maintaining the timing and spray pattern required for engine performance. Precision-machined components, including the nozzle, plunger-and-barrel assembly, seals and precision orifices, support robust fuel delivery. A control valve is used in electronic HEUI or MEUI systems where applicable. The assembly is designed for high-pressure, high-temperature and high-vibration operating conditions and is manufactured to OEM or premium aftermarket standards, with relevant ISO quality standards cited for diesel fuel-system components.

Typical applications include generators, excavators, construction machinery, industrial power units, marine power and other heavy industrial equipment. Installation should be completed by a certified diesel technician using service-manual torque specifications and the required calibration and injector sequencing. Clean diesel, regular filter replacement, and periodic cleaning or test-bench calibration support service life. Because injector calibration varies, buyers should confirm the exact engine serial range and control system before ordering.