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4935674 High Pressure Fuel Injection Pump for Cu-mmins 8.3L/8.9L Ccr Fuel Systems
| MOQ: | 1 pieces |
| Price: | US $350.32-370.32 |
| Payment Method: | L/C,D/A,D/P,T/T,Western Union |
| OE No. | 4935674 |
| Type | Fuel Injector Pump |
| Car Make | Diesel Car |
| Packing | Neutral Packing or Customize Packing |
| Warranty | 1 Year |
| MOQ | 1PC |
This industrial-grade digital electronic fuel injector unit (standard specification code: 4935674, common interchangeable and cross-referenced part numbers include 4935674PX, 5263308, C5263308, etc.) is meticulously crafted for medium and heavy-duty commercial diesel power systems (such as ISF3.8 and ISBE series diesel engines). It is the core control component for achieving high-pressure micro-metering and ultra-fast atomization of diesel fuel. The product is widely used in intercity medium-duty trucks, special engineering dump trucks, passenger buses, and generator sets.
This product adheres to the design philosophy of "ultra-fine particle high-pressure atomization and millisecond-level response control." The internal valve needle and electromagnetic response valve core are both subjected to ultra-high precision grinding and low-friction polishing, and the surface is covered with a high-density anti-coking hardened coating, which effectively resists early erosion caused by diesel impurities. After the equipment is upgraded, drivers and operators will experience a noticeable performance improvement: ignition and starting are crisp and smooth, and the severe vibrations and jerks at low idling are completely eliminated; under full load acceleration or continuous uphill driving, the accelerator pedal response is tight and smooth, power is continuous and abundant, and black smoke emissions are significantly reduced, resulting in excellent overall fuel economy control.
Advantages: Integrated intelligent manufacturing supply chain from the source factory.
Problems Solved: Traditional OEM procurement models involve complex processes that easily lead to excessive tolerances in parts, uneven fuel supply to cylinders, and high-pressure leakage, while significantly increasing procurement costs.
Value Gained: Relying on a self-built standardized production base for end-to-end precision manufacturing, eliminating layers of intermediaries and ensuring consistent injection height across cylinders, significantly reducing maintenance costs while providing a solid and reliable power guarantee for long-term equipment operation.
Advantages: Full-condition ultra-high pressure dynamic micron-level bench inspection.
Problems Solved: Addressing common issues with inferior, low-end parts, such as atomization angle deviation, sluggish solenoid valve response leading to incomplete combustion, engine misfires, idling vibrations, and wasted time and extra costs associated with secondary disassembly and adjustment.
Value Brought: Each injector undergoes fully automated digital testing before leaving the factory. Under simulated high-temperature and ultra-high-pressure conditions, the injection volume and return oil sealing across different pressure ranges are precisely calibrated, ensuring immediate usability upon installation and significantly reducing time and costs associated with equipment disassembly and adjustment.
Advantages: Large-scale warehousing and readily available stock for rapid delivery response.
Problems Solved: Commercial vehicles and construction machinery are high-upload, high-revenue tools. If they become stranded due to fuel system failures, downtime and lack of materials can result in costly delay 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 and priority packing and dispatch within 24-48 hours significantly shorten logistics and delivery cycles, helping fleets and owners quickly restore equipment operational readiness and effectively avoiding downtime losses.
Advantages: Nanoscale DLC coating and special wear-resistant alloy valve assembly.
Problems Solved: Addresses issues such as premature wear of valve components, needle valve jamming, and excessive return oil caused by variations in diesel lubricity and particulate impurities in different regions.
Value Brought: The core valve assembly components utilize high-strength special bearing steel and undergo surface anti-corrosion hardening treatment, significantly improving fatigue resistance and wear resistance. It maintains stable performance even under harsh environments and prolonged high-load operation, avoiding the additional costs associated with frequent disassembly and repairs.
| Parameter Name | Parameter Value |
|---|---|
| Product Name | High-Pressure Electronic Common Rail Injector for Medium and Heavy-Duty Diesel Engines |
| Standard OE Part Number | 4935674 |
| Common Interchange Numbers | 4935674PX / 5263308 / C5263308 |
| Applicable Engine Models | ISF3.8 / ISBE Series Diesel Engines |
| Fuel Supply System | High-Pressure Electronic Common Rail System |
| Core Valve Core Material | Aerospace-grade hardened bearing steel, corrosion-resistant high-hardness special alloy steel |
| Needle Valve Coating 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 |
| Working Temperature Range | -40°C to +125°C |
| Internal Sealing Components | Original Equipment Manufacturer (OEM) High-Temperature Resistant and Anti-Swelling Special Fluororubber (FKM O-Rings) |
| Net Weight per Unit | Approx. 0.78 kg / piece |
| Testing Standards | 100% Automated Bench Flow and Pressure Testing |
Intercity Logistics and Short-to-Medium-Distance Passenger and Freight Transport: Light and medium-duty trucks frequently start, shift gears, and cruise for extended periods on urban trunk lines and regional logistics routes. When drivers encounter sluggish vehicle power, increased fuel consumption, or black smoke, they can replace aged parts and install this high-precision fuel injector. After replacement, fuel atomization is more complete, throttle response is more agile, effectively reducing overall fuel consumption and ensuring efficient and stable logistics transportation.
High-Load Construction Scenarios for Urban Construction Dump Trucks and Special Operation Machinery: Small dump trucks and special operation machinery operate continuously for extended periods in high-dust, high-load environments. When the equipment exhibits severe idling vibration, difficulty starting, or excessive emissions, on-site maintenance personnel promptly replace the entire set of high-quality injectors. Precise injection control ensures stable power output even under extreme operating conditions, preventing stalling or abnormal wear caused by uneven fuel supply.
Q: Can I use the product directly after installation? Is a correction code required?
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, maintaining a large inventory of this model year-round. Standard orders can be packaged and shipped within 24-48 hours, and large-volume orders can be quickly scheduled for production.
Q: How do you guarantee the quality and performance of the product before it leaves 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 of superior quality from the outset.
Q: How long is the warranty period? What are the after-sales service details?
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.
