Diesel Unit Pump 0414799006 00414799008 986445103 for Mercedes Benz Om900 Om902 Om904 Om906 Om924 A0280746902 Fuel Pump

This heavy-duty electronically controlled unit pump (high-pressure diesel fuel supply pump assembly)—bearing part identification code 0414799006 (with common OE cross-references including 0414799001, 0414799002, 0414799003, 0414799004, 0414799005, 0986445006, 20450251, 20460158, etc.)—is precision-engineered. Designed for the D12D/D12C series 12L inline-six heavy-duty diesel engine platform, it is widely installed in FM12 and FH12 heavy-duty tractors, trucks, and industrial diesel generator sets. 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 facilitating thorough mixing and combustion with the intake airflow.

The component is manufactured to standards emphasizing "micro-level fit precision" and "millisecond-level rapid response." Its core control valve core and needle valve assembly are crafted from aerospace-grade, hardened special alloy steel, featuring ultra-high-precision geometric grinding and low-friction polishing. The surface is finished with a dense, ultra-hard coating that effectively prevents internal scratching and pressure loss caused by impurities in the diesel fuel. After installation, drivers and mechanics will notice immediate improvements: crisp, clean cold starts and whisper-quiet, vibration-free idling. Whether climbing steep hills, stop-and-go driving, or cruising long distances, the throttle response is sharp and precise, delivering smooth, robust acceleration. Additionally, it reduces black smoke emissions, ensuring excellent fuel efficiency and a stable, comfortable driving experience.

Standardized smart manufacturing and quality control from the source factory. We eliminate issues common with intermediary distribution—such as excessive assembly tolerances, uneven cylinder fuel delivery, and high-pressure leakage risks—while effectively lowering procurement costs. By utilizing a standardized production base with end-to-end quality control and removing unnecessary markups, we ensure consistent fuel injection pressure and flow across all cylinders. This reduces maintenance budgets while providing reliable, robust power for vehicle and equipment operations.

Rigorous testing on ultra-high-pressure digital dynamic test benches. We address common problems found in low-quality replacements—such as response lag, pressure-loss-induced sticking (causing engine misfires and vibration), and the wasted time and money associated with repeated installation and tuning. Every injection component undergoes automated testing before leaving the factory. Flow rates and sealing integrity are precisely calibrated across various pressure ranges in environments simulating real-world high-temperature, ultra-high-pressure conditions. This ensures "ready-to-install" performance, drastically saving time and costs on installation and adjustment.

Large-scale warehousing and rapid shipping response. Recognizing that daily commuter and commercial transport vehicles are high-utilization assets, we aim to prevent the costly downtime and revenue loss caused by fuel system failures. Our warehouse maintains ample stock year-round; orders are packed and shipped within 24–48 hours of confirmation. This significantly shortens logistics wait times, helping fleets and owners get back on the road quickly and avoid losses due to vehicle downtime.

Specialized quenched alloy needle valves and wear-resistant hardened coatings. Designed to combat issues where poor diesel lubricity or high sulfur content leads to premature component wear and valve core sticking. Key components are crafted from high-hardness specialty bearing steel and feature a surface anti-corrosion treatment, significantly enhancing fatigue and wear resistance; they maintain stable performance even under harsh conditions and prolonged high-load operation, thereby reducing the additional costs associated with frequent disassembly and repair.

Heavy-duty truck intercity freight and long-haul logistics operations: Cargo trucks frequently travel intercity routes, often operating under full-load cruising and continuous uphill climbing conditions for extended periods. Maintenance personnel should replace the complete set of high-precision fuel injection components when drivers notice sluggish acceleration, insufficient power during high-gear climbs, or a significant increase in fuel consumption. After installation, fuel injection pressure builds up rapidly and remains stable; acceleration under heavy loads is robust and smooth, ensuring freight tasks are completed on time and efficiently.

Construction sites and specialized machinery operations: Medium-to-heavy construction equipment and dump trucks operating on earthworks sites face challenges such as heavy dust and high operational loads. When equipment experiences sluggish starting, severe idling vibration, or stalling under heavy loads, maintenance teams can install this electronically controlled fuel injection assembly. Precise fuel atomization allows the engine to instantly deliver high torque at low RPMs, smoothly handling frequent stop-start cycles and heavy-load demands to keep projects on schedule.

1. Q: Can the product be used immediately after installation, or does a correction code need to be entered?
2. 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 ensure optimal fuel efficiency and smooth operation.
3. Q: What are the stock levels and lead times for bulk orders?
4. A: We operate our own factory and large-scale warehouses, maintaining substantial, year-round inventory for this model. Standard orders are packed and shipped within 24–48 hours, while bulk orders can be quickly scheduled for production.
5. Q: How are product quality and performance ensured before shipment?
6. A: All fuel injectors undergo assembly in a Class 100 cleanroom environment and 100% bench testing across all operating conditions. Tests cover critical metrics such as sealing integrity, pilot injection volume, full-load injection volume, and fuel return volume; our rigorous standards ensure that every unit shipped is of premium quality.
7. Q: What is the warranty period, and how is after-sales support handled?
8. A: We offer a 12-month warranty. In the event of a performance failure due to non-human factors during the warranty period, we provide rapid replacement or technical support to ensure a worry-free experience.