Diesel Common Rail Fuel Injector 0445110319 33800-2A900 for Hyundai D4FC D4fb D4fb L1.6

This heavy-duty, electronically controlled high-pressure common-rail diesel fuel injector assembly (Part ID: 0445110319 / 0 445 110 319; common OE cross-references include 0986435202, 5258744, D5258744, etc.) is precision-engineered for the ISF 2.8L four-cylinder diesel engine platform. It is widely used in light trucks, intercity logistics vans, commercial passenger vehicles, and select off-road SUVs. As a core actuator within the fuel supply system—responsible for controlling diesel atomization quality and pulse injection timing—it precisely meters high-pressure diesel and rapidly disperses it into ultra-fine particles in response to millisecond-level electrical signals, thereby promoting thorough mixing and combustion with the intake airflow.

Designed and manufactured to standards emphasizing "micro-level precision fit" and "millisecond-level agile response," the component features a core control valve spool and needle valve assembly crafted from aerospace-grade, hardened special alloy steel. These parts undergo ultra-high-precision geometric grinding and low-friction polishing, with surfaces finished in a dense, ultra-hard coating that effectively prevents internal scratching and pressure loss caused by diesel impurities. Upon installation, drivers and mechanics will notice immediate improvements: crisp, clean cold starts and quiet, vibration-free idling. Whether climbing steep slopes, navigating stop-and-go traffic, or cruising long distances, the throttle response is sharp and sensitive, and acceleration is robust yet smooth. Additionally, the unit reduces black smoke emissions, delivering satisfactory fuel efficiency and a stable, refined driving experience.

Standardized smart manufacturing and rigorous quality control directly from the source factory. Cost-effective sourcing by eliminating intermediary markups. By leveraging standardized production bases for end-to-end quality control and removing unnecessary middlemen, we ensure highly consistent injection pressure and flow rates across all cylinders. This approach not only cuts maintenance budgets but also provides reliable, robust power for vehicle and equipment operations.

Rigorous testing on ultra-high-pressure digital dynamic test benches. Low-quality replacements often suffer from response lag and pressure-release malfunctions—causing engine misfires and vibration—as well as wasted labor and costs due to repeated installation and adjustment. Every injection assembly undergoes automated testing before leaving the factory; flow rates and sealing integrity are precisely calibrated across various pressure ranges in simulated high-temperature, ultra-high-pressure environments. This ensures "ready-to-install" performance, drastically saving time and costs associated with installation and tuning.

Large-scale warehousing and rapid shipping response. Vehicles used for daily commuting and commercial transport are high-utilization assets; fuel system failures can lead to costly downtime and revenue loss. Our warehouse maintains ample stock, with orders packed and shipped within 24–48 hours of confirmation. This significantly reduces logistics wait times, helping fleets and owners quickly resume operations and avoid losses caused by vehicle downtime.

Special-quenched alloy needle valves with wear-resistant hardened coatings. In regions where diesel fuel has poor lubricity or high sulfur content—factors that often cause premature wear and valve sticking in precision components—we provide a superior solution. Our core components utilize high-hardness special bearing steel and anti-corrosion surface treatments. These enhancements offer exceptional fatigue and wear resistance, ensuring stable performance even under harsh conditions and prolonged high-load operation, thereby reducing the extra expenses associated with frequent repairs.

Light-duty trucks and intercity express delivery operations: Light pickup trucks and vans frequently travel between cities and within urban areas, often facing conditions involving full-load starts and stop-and-go traffic. Technicians replace the injector when drivers experience sluggish acceleration, a lack of power on inclines, or a noticeable increase in fuel consumption. After installation, fuel pressure builds up smoothly, acceleration becomes responsive and precise, and fuel economy is improved. High-frequency operation scenarios for business shuttles and commuter buses: These vehicles transport passengers over long distances daily, demanding quiet idling and smooth engine operation. When issues such as sluggish cold starts, severe idling vibration, or excessive exhaust emissions arise, maintenance teams promptly install a complete set of electronically controlled fuel injection components. Precise fuel atomization restores smooth engine operation, ensuring a comfortable and punctual journey.

Q: Can the product be used immediately after installation, or is it necessary to input a correction code?
A: Each fuel injector is assigned a unique flow correction code (IMA/QR code) during factory testing. We recommend using a diagnostic tool to program this code into the engine control unit (ECU) after installation to achieve optimal fuel efficiency and smooth operation.

Q: What are the lead times for stock and shipping on bulk orders?
A: We operate our own factory and large-scale warehouses, maintaining substantial, year-round inventory for this model. Standard orders are typically packed and shipped within 24–48 hours, while bulk orders can be quickly scheduled for production.

Q: How are product quality and performance ensured before shipment?
A: All fuel injectors undergo assembly in a Class 100 cleanroom environment and 100% bench testing across all operating conditions. Tests cover critical parameters suchs as sealing integrity, pre-injection volume, full-load injection volume, and fuel return volume; our rigorous standards ensure that every unit shipped is of premium quality.

Q: What is the warranty period, and how is after-sales support handled?
A: We offer a 12-month warranty. Should a performance failure occur due to non-human factors within the warranty period, we provide rapid replacement or technical support to ensure a worry-free experience.