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Common Rail Diesel Fuel Injector Assembly 4397488 for Series Engine Xpl
| MOQ: | 1 pieces |
| Price: | US $145-170 / piece |
| Payment Method: | L/C,D/A,D/P,T/T,Western Union |
| OE No. | 4397488 |
| Type | Fuel Injector Pump |
| Car Make | Diesel Car |
| Packing | Neutral Packing or Customize Packing |
| Warranty | 1 Year |
| MOQ | 1PC |
This model of high-pressure electronically controlled common rail nozzle mechanism (standard part number: 4397488, common OE cross-reference and interchangeable identification numbers include 4397488PX, 4397488RX, 0445120304, 5263307, 5308182, etc.) is specifically designed and manufactured for medium and heavy-duty freight vehicles, construction equipment, and high-power diesel power platforms (such as ISBE and ISDE series 4.5L/6.7L inline multi-cylinder diesel engines, commonly installed in medium-sized trucks, urban logistics vehicles, and large and medium-sized buses). As the micro-spray and flow metering execution unit of the electronically controlled high-pressure common rail system, it is responsible for accurately metering and rapidly dispersing high-pressure diesel fuel into micron-level ultra-fine atomized particles with millisecond-level ultra-fast response, promoting thorough mixing of fuel and intake airflow to achieve efficient combustion and powerful output.
The product adheres to the manufacturing standards of "high-pressure particle refinement and microsecond-level ultra-fast response." The internal needle valve assembly and armature control valve core are made from carefully selected 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 replacement and installation, mechanics and equipment operators will experience a clear and intuitive performance improvement: crisp and clean starts, with severe vibrations and jerks at low idle speeds becoming stable; under full-load climbing or high-intensity continuous operation, the control lever and throttle are tight and smooth, acceleration is rapid and powerful, and black smoke emissions are significantly reduced, resulting in excellent overall fuel consumption control.
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: By relying on a self-built standardized production plant for precision manufacturing throughout the entire process, the layers of intermediaries are eliminated, ensuring consistent injection height across cylinders. This reduces maintenance costs and provides a solid and reliable power guarantee for long-term equipment operation.
Problems Solved: Low-quality parts are prone to issues such as delayed solenoid valve response, internal pressure leakage, and needle valve jamming, leading to unstable power output after installation and wasted time and money on repeated disassembly and debugging.
Value Gained: Every injector undergoes fully automated 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 for different pressure ranges, ensuring immediate usability after installation and greatly saving time and costs associated with equipment disassembly and debugging.
Problems Solved: Commercial vehicles and construction machinery are high-upload, high-revenue tools. If they become stranded due to fuel system failure, the resulting downtime and lack of materials will incur costly delays, compensation, and lost work time.
Value Brought: The warehousing center maintains a sufficient stock of best-selling specifications year-round. After order confirmation, a rapid response is provided, with priority packing and dispatch within 24-48 hours, significantly shortening the logistics and delivery cycle. This helps fleets and owners quickly restore equipment availability and effectively avoids downtime losses.
Problems Solved: Addressing the issue of premature wear and valve core seizure caused by differences in diesel lubricity and sulfur content in different regions.
Value Brought: Core valve assembly components are made of high-strength special bearing steel with a surface anti-corrosion hardening treatment, significantly improving fatigue resistance and wear resistance. Even under harsh environments and prolonged high-load operation, it maintains stable performance, avoiding the additional costs of frequent disassembly and repair.
| Parameter Name | Parameter Value |
|---|---|
| Product Name | Heavy-Duty Diesel Engine High-Pressure Electronic Common Rail Injector |
| Standard OE Part Number | 4397488 |
| Interchangeable Part Number | 4397488PX / 4397488RX / 0445120304 / 5263307 / 5308182 |
| Applicable Engine Platform | ISBE / ISDE Series 4.5L / 6.7L Diesel Engines |
| Fuel Supply System | High-Pressure Electronic Common Rail System |
| Core Needle Valve Material | Aerospace-Grade Quenched Bearing Steel, Corrosion-Resistant High-Hardness Special Alloy Steel |
| Surface Treatment Process | High-Density Ultra-Wear-Resistant DLC Hardened Coating |
| Nozzle Machining Technology | EDM High-Precision Electrical Discharge Micro-Needle 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. 0.85 kg / piece |
| Testing Standards | 100% automated full-condition bench flow and sealing tests |
Long-haul logistics and intercity trucking conditions: Heavy and medium-duty freight trucks travel fully loaded for extended periods on highways, 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 injector. 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.
Urban construction and high-intensity work scenarios: Construction waste trucks and large engineering vehicles frequently start and climb hills in complex, 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.
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.
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.
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.
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.
