original Replacement Common Rail Fuel Injector Assembly 191-3005, Cross Reference 20R-4148, for 3412 Diesel Engine, Replacement for OEM 198-4752, 198-6877 original new injector

Engineered for 3412-series diesel power systems, the 191-3005 fuel injector serves industrial, marine, mining, oilfield and power-generation applications. This OEM-equivalent component is also identified as 1913005, with cross references including 0R-8477, 10R-0955, 170-5187, 4P-9830 and 7W-7032. Compatible engines may include 3412, 3412B, 3412C and 3412 DITA configurations, including marine, generator, industrial and power-package variants. Buyers should verify the engine serial number and arrangement number before ordering to confirm fitment.

As part of the diesel combustion system, the injector meters fuel and opens its needle valve at calibrated pressure. Fuel is atomized into microscopic droplets, delivered to the combustion chamber and ignited through compression ignition; the injector then closes to help prevent fuel leakage. Precise metering and spray atomization support combustion efficiency, engine power, fuel economy and emissions performance. Additional advantages include high-pressure fuel handling, consistent engine performance, reduced carbon buildup, lower maintenance requirements and long service life under extreme load conditions.

Precision hardened alloy steel construction provides corrosion resistance and OEM-equivalent fitment. The injector is supplied in export-standard packaging, with warranty typically 12 months. Installation should follow service manual procedures, including new sealing washers and O-rings, bore inspection, fuel-line cleanliness checks, correct torque and leak testing. Clean fuel, regular filter replacement and injector balance testing help sustain performance; starting, idle, smoke, knocking, misfire or power-loss symptoms require prompt attention.