original 0R-9944 Excavator Parts 0R9944 Common Rail Injector 229-1631 192-2817 new injector original new injector

The 3512B Fuel Injector 0R-9944 is purpose-built for the 3512B diesel engine, a 4-stroke V12 industrial power unit widely used in power generation, marine propulsion, oil and gas operations, and heavy machinery applications. Manufactured to OEM-equivalent specifications, this injector delivers precise fuel metering and consistent spray pattern, ensuring optimal combustion efficiency across demanding industrial environments. It is fully interchangeable with part numbers 238-7323 and 10R-7555, providing a reliable replacement solution for engine maintenance and overhaul programs.

Constructed from high-strength alloy steel with an anti-corrosion and wear-resistant coating, the 0R9944 injector is engineered for long service life under extreme operating conditions. It operates at a pressure range of 2000–2500 bar with a flow rate of 300–350 ml/min @ 2000 bar and a spray angle of 155° ± 5°, ensuring efficient atomization for the 3512B V12 configuration. The precision-engineered nozzle supports direct injection performance, while bolt-on installation with OEM specification torque (35–45 Nm) guarantees proper seating and sealing. With a robust operating temperature range of -40°C to 120°C and high-pressure durability up to 2500 bar, this injector maintains stable performance in heavy-duty industrial engines.

Routine maintenance every 500 operating hours is recommended to sustain peak performance, including inspection of seals, cleaning of fuel filters, and verification of injector alignment with cylinder head ports. Worn nozzles, clogged injector tips, or leaking seals can lead to misfire, pressure drop, and incomplete combustion—issues effectively addressed by replacing the unit with this OEM-equivalent part. Each injector is individually packaged in anti-corrosion material and backed by a 12-month / 1000 operating hours warranty. With global availability across North America, Europe, Asia, Australia, and the Middle East, the 3512B injector 0R-9944 is a trusted choice for power plants, mining equipment, marine engines, drilling rigs, and construction machinery.