Common Rail 400903-00043D/28347042 Diesel Fuel Injector for DOOSAN Engines

Parameter	Details
Model Number	400903-00043D / 28347042
Engine Compatibility	DOOSAN Diesel Engines
Injector Type	Common Rail Electronic Fuel Injector
Control Mechanism	Solenoid Valve Control
Maximum Injection Pressure	1600 – 1800 bar
Nozzle Holes	6 – 8 holes (depending on engine model)
Material	High-strength alloy steel with hardened surface
Application	Construction Equipment, Heavy Trucks, Gensets
Features	High injection precision, fast response, durable

 

 

Precision-engineered with 6 to 8 nozzle holes, depending on the engine specification, the injector ensures uniform spray patterns, reduced fuel wastage, and minimal emissions. The nozzle holes are laser-drilled and balanced for symmetrical atomization, which is essential for achieving complete combustion and maximizing power output while maintaining fuel efficiency.

The injector body is manufactured from high-strength alloy steel with a surface hardening treatment, providing excellent resistance to corrosion, pressure fatigue, and high temperatures-conditions commonly encountered in construction and industrial diesel applications.

 

 

This injector is widely used across a range of DOOSAN diesel-powered equipment, including:

Heavy-duty construction machinery (excavators, wheel loaders, bulldozers)

Industrial generators and gensets

Commercial diesel vehicles and heavy trucks

Its robust construction and consistent performance make it an ideal replacement for OEM injectors in environments requiring reliability and endurance.

 

 

To ensure consistent and reliable operation in the field, each injector undergoes extensive testing and validation at the factory level:

High-pressure leakage test: Ensures no fuel escapes under full system pressure.

Spray pattern analysis: Conducted using high-speed cameras and laser imaging to verify even distribution and optimal atomization.

Solenoid response test: Measures the opening/closing time of the valve to guarantee fast and precise injection timing.

Flow calibration test: Ensures the injector delivers exact fuel volume per pulse, matching engine requirements.

Durability endurance testing: Simulates extreme thermal and pressure cycling (up to 2000 bar) to test component fatigue and longevity.

These tests are performed in compliance with ISO/TS 16949 standards and industry benchmarks to ensure the highest quality and reliability. In addition, injectors are batch-tested using fuel system test benches such as BOSCH EPS or HARTRIDGE AVM platforms, which replicate real-world engine dynamics.

 

 

Superior Fuel Economy: High-pressure injection reduces fuel consumption by promoting complete combustion.

Extended Service Life: Hardened materials and precision components provide long-lasting operation with minimal wear.

OEM Fit & Function: Direct replacement for original DOOSAN injectors without the need for modification.

Low Emissions: Fine fuel atomization leads to cleaner combustion and lower NOx and particulate emissions.

Cold Start Performance: Solenoid control and high-pressure delivery enhance start-up reliability in low temperatures.

 

 

 

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