Fuel Injector Compatible for Delphi A3 Series Common Rail Diesel Fuel Injector 33800-84000 , High-Pressure Injector compatible for Hyundai D4DD Engines in Light Commercial Vehicles

The Delphi A3 33800-84000 diesel fuel injector is part of the A3 common rail system developed for Hyundai D4DD diesel engines, widely used in light commercial trucks and buses. This injector ensures precise fuel delivery under high pressure, enabling cleaner combustion, better fuel economy, and reliable operation across a range of load conditions.

Equivalent / OEM Codes:

• Delphi: A3 33800-84000

• Hyundai OEM: 33800-84000

• Other catalog references: 28342996, 3380084000

Engine Compatibility:

• Hyundai D4DD 3.9L Euro III / Euro IV diesel engine

• Found in models produced between 2004–2012 (and in some markets, up to Euro IV regulation)

Compatible Equipment (examples):

• Hyundai HD65, HD72, HD78 trucks

• Hyundai County minibuses and shuttle buses

• Other Hyundai light-duty commercial vehicles equipped with D4DD engine

Technical Notes:
As part of Delphi’s A3 high-pressure common rail platform, this injector offers fine fuel atomization, enhanced throttle response, and reduced emissions. It is engineered for urban-duty cycles and long-term reliability. Injector coding via diagnostic tools is often required during installation to ensure full ECU integration and proper performance.