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Fuel Injector 4964170 4955524 4928106 4924587 4089972 for Cu-mmins Qsk38 Qsk19 Engine
| MOQ: | 1 pieces |
| Price: | US $320.32-340.32 |
| Payment Method: | L/C,D/A,D/P,T/T,Western Union |
| OE No. | 4089972 |
| Type | Fuel Injector |
| Car Make | Diesel Car |
| Packing | Neutral Packing or Customize Packing |
| Warranty | 1 Year |
| MOQ | 1PC |
This high-pressure electronically controlled common rail injector assembly (standard part codes: 4089972 / 4089972NX / 4089972RX, common interchangeable and cross-identification numbers include 4026222, 4062569, 4954434, 0445120059, etc.) is precision-manufactured for heavy-duty long-haul trucks, long-haul tractor-trailers, and high-power diesel power platforms (such as ISX15, QSX15, ISBe series 5.9L / 15.0L inline six-cylinder diesel engines, commonly fitted in heavy-duty logistics semi-trailers, dump trucks, and large industrial generator sets). As the core of the fuel supply system's micro-metering and spray execution, it is responsible for accurately metering high-pressure diesel fuel and rapidly dispersing it into ultra-fine atomized particles with a microsecond-level high-frequency response, promoting comprehensive and uniform mixing of fuel and intake airflow for complete and efficient combustion.
The product adheres to the manufacturing standards of "microscopic ultra-fine atomization and millisecond-level ultra-fast response." The internal needle valve assembly and armature control valve core are made from carefully selected aerospace-grade quenched special alloy steel, combined with ultra-high precision geometric grinding and low-friction polishing. The surface is covered with a dense, anti-coking hardened coating, effectively preventing early erosion caused by diesel impurities. After the parts are installed, drivers and on-site maintenance personnel will experience a significant performance improvement: ignition starts crisply and quickly, and the severe vibration and shaking at low-speed idling are completely eliminated; under full-load high-speed cruising or steep incline conditions, the accelerator pedal response is firm and smooth, acceleration is rapid and powerful, and exhaust black smoke is significantly reduced, resulting in excellent overall fuel consumption control.
Advantages: Precision manufacturing throughout the entire process at our self-operated modern production base.
Problems Solved: Traditional OEM and multi-level procurement models involve complex processes that easily lead to excessive tolerances in component fit, uneven fuel supply to cylinders, and high-pressure leaks, while significantly increasing procurement costs.
Value Gained: Utilizing a self-built standardized production plant for precision manufacturing throughout the entire process eliminates intermediaries and their markups, ensuring consistent injection height across all cylinders. This reduces maintenance costs and provides a robust and reliable power guarantee for long-term equipment operation.
Advantages: 100% fully simulated digital dynamic test bench for rigorous quality inspection.
Problems Solved: Addresses common issues with inferior parts, such as injection atomization deviation, incomplete combustion due to sluggish solenoid valve response, engine misfires, idling vibrations, and wasted time and additional costs associated with secondary disassembly and adjustment.
Value Gained: Each nozzle unit undergoes fully automated digital testing before leaving the factory. Under fully simulated high-temperature and ultra-high-pressure conditions, the injection volume and return oil sealing are precisely calibrated across different pressure ranges, ensuring immediate usability upon installation and significantly reducing time and costs associated with equipment disassembly and adjustment.
Advantages: Sufficient stock of readily available inventory for rapid delivery.
Problems Solved: For high-upload productivity tools like construction machinery and commercial vehicles, breakdowns due to fuel system malfunctions can lead to costly delays, compensation claims, and lost work time.
Value Brought: Our warehousing center maintains a large inventory of best-selling specifications year-round. Orders are processed quickly, with priority packing and shipping within 24-48 hours, significantly shortening logistics cycles and helping fleets and owners quickly restore equipment availability, effectively mitigating downtime losses.
Advantages: Special quenched alloys and corrosion-resistant hardened coatings.
Problems Solved: Addressing the issue of premature wear and valve core seizure caused by variations in diesel lubricity and sulfur content in different regions.
Value Brought: Core valve components utilize high-strength special bearing steel and a surface corrosion-resistant hardening treatment, significantly improving fatigue resistance and wear resistance. This ensures stable performance even in harsh environments and under prolonged high-load operation, avoiding the additional costs of frequent repairs.
| Parameter Name | Parameter Value |
|---|---|
| Product Name | Heavy-Duty Diesel Engine High-Pressure Electronic Common Rail Injector |
| Standard OE Part Number | 4089972 |
| Interchangeable Part Numbers | 4089972NX / 4089972RX / 4026222 / 4062569 / 4954434 |
| Applicable Engine Platforms | ISX15 / QSX15 / ISBe Series Diesel Engines |
| Fuel Supply System | High-Pressure Electronic Common Rail Injection System (Common Rail) |
| Core Needle Valve Material | Aerospace-grade hardened bearing steel, corrosion-resistant high-hardness special alloy |
| Surface Treatment Process | High-Density, Ultra-Wear-Resistant DLC Hardened Coating |
| Injector Orifice Micro-Engraving Technology | EDM High-Precision Electrical Discharge Micro-Orifice Machining |
| Maximum Working Pressure | ≥ 1800 bar |
| Operating Temperature Range | -40°C to +125°C |
| Internal Sealing Components | Original factory-grade high-temperature resistant and swelling-resistant special fluororubber (FKM O-Rings) |
| Net Weight per Unit | Approx. 1.15 kg / piece |
| Factory Testing Standards | 100% automated full-condition bench flow and sealing tests |
Long-haul logistics and highway traction transport: Heavy-duty semi-trailer tractors continuously travel fully loaded on inter-provincial highways and long-distance trunk logistics routes, placing extremely high demands on engine fuel supply stability and fuel economy. When truck drivers notice sluggish acceleration for overtaking, insufficient power when climbing hills in high gears, or black smoke from the exhaust pipe, mechanics promptly replace the fuel with this high-precision common rail injection valve. After replacement, fuel atomization is extremely fine and uniform, engine power reserves are fully restored, throttle response is brisk, and overall fuel consumption per 100 kilometers is effectively reduced.
Heavy engineering transportation and dump truck operation scenarios: Construction waste trucks and mining dump trucks frequently start and climb hills in complex road conditions and dusty construction sites. When vehicles experience starting difficulties, severe idling vibrations, or uneven cylinder operation, the maintenance team replaces the entire set of high-specification fuel injection components. Precise electronic injection control allows the engine to instantly release high torque at low speeds, smoothly handling frequent start-stop cycles and heavy loads, ensuring efficient and smooth transportation operations.
Q: Can I use the product directly after installation? Is it necessary to enter a correction code?
A: Each injector has a unique flow correction code (IMA code) generated during factory testing. It is recommended to use a diagnostic tool to flash the correction code into the engine ECU after installation to achieve optimal fuel efficiency and smoothness.
Q: What is the inventory and delivery time for bulk purchases?
A: We have our own factory and large warehouse, and maintain a large inventory of this model year-round. Standard orders can be packaged and shipped within 24-48 hours, and large-volume orders can also be quickly scheduled for production line setup.
Q: How do you guarantee the quality and performance of your products before they leave the factory?
A: All injectors undergo assembly in a Class 100 cleanroom and 100% full-condition bench testing, covering key indicators such as sealing, pre-injection volume, full-load injection volume, and return oil volume. These stringent testing standards ensure that they are high-quality products from the outset.
Q: How long is the warranty period? What about after-sales service?
A: We offer a 12-month warranty period. If a performance failure occurs within the warranty period due to non-human factors, we provide rapid replacement or after-sales technical support to ensure your peace of mind when using our products.
