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Common Rail Diesel Fuel Injector Assembly 4964171 for Cu-mmins Engine Qsk19/38/50/60
| MOQ: | 1 pieces |
| Price: | US $325-349 / piece |
| Payment Method: | L/C,D/A,D/P,T/T,Western Union |
| OE No. | 4964171 |
| Type | Fuel Injector Pump |
| Car Make | Diesel Car |
| Packing | Neutral Packing or Customize Packing |
| Warranty | 1 Year |
| MOQ | 1PC |
This high-pressure electronically controlled common rail injection unit (standard part number: 4964171, common interchangeable parts include 4964171PX, 4088665, 4902827, etc.) is specifically designed for heavy-duty diesel power systems (such as ISX15 and QSX15 series large-displacement engines). It is the core control component for achieving precise fuel metering and ultra-high pressure fine injection. The product is widely applicable to heavy-duty trucks in long-haul logistics, large-tonnage engineering dump trucks, special construction machinery, and high-load standby diesel generator sets.
This product adheres to the design and manufacturing standards of "high-pressure ultra-fine atomization and microsecond-level precise response." The internal needle valve assembly and control valve core are ground with micron-level geometric matching, and the surface is covered with a high-density anti-coking hardening coating, which can easily cope with the abrasion of impurities in deteriorated diesel fuel. After installation and refitting, operators will experience a noticeable improvement in power: ignition and starting are clean and crisp, and the severe vibrations at low idle speeds are completely eliminated; during full-load climbing or continuous heavy-load operation, the throttle and control lever responses are crisp and linear, providing a continuous, solid, and stable power output, significantly reduced black smoke emissions, and excellent overall fuel economy control.
Problems Solved: Traditional outsourcing often leads to dimensional deviations in component fit and inconsistent batch performance, resulting in uneven fuel supply to cylinders and potential high-pressure leaks.
Value Brought: Relying on a standardized, self-built production base for end-to-end precision manufacturing, from micron-level grinding of needle valve components to automated assembly, the entire process is controlled to ensure consistent injection height across cylinders, providing a solid and reliable power guarantee for long-term equipment operation.
Problem Solved: Inferior, low-end parts can easily lead to unstable power, knocking, cylinder scoring, and wasted time and extra expenses due to repeated disassembly and adjustment after installation.
Value Brought: Each injector undergoes fully automated testing before leaving the factory. Under 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 significantly saving time and costs associated with equipment disassembly and adjustment.
Problem Solved: Construction machinery and commercial trucks are high-uptime, high-revenue tools. If a breakdown occurs due to fuel system failure, 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. Orders are responded to quickly, with priority packing and shipping within 24-48 hours, greatly shortening the logistics and delivery cycle. This helps fleets and owners quickly restore equipment availability and effectively avoids downtime losses.
Problem Solved: Differences in diesel lubricity and sulfur content across different regions can easily lead to premature wear of valve components and valve core seizure.
Value Gained: The core valve components are made of high-strength special bearing steel and undergo surface anti-corrosion hardening treatment, significantly improving fatigue resistance and wear resistance. This ensures 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 | Heavy-Duty Diesel Engine High-Pressure Electronic Common Rail Injector |
| Standard OE Part Number | 4964171 |
| Common Interchange Numbers | 4964171PX / 4088665 / 4902827 |
| Applicable Engine Models | ISX15 / QSX15 Series Heavy-Duty Diesel Engines |
| Fuel Supply System | High-Pressure Electronic Common Rail/Unit Injection System |
| Core Valve Core Material | Aerospace-Grade Quenched 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 |
| Operating 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 Monomer | Approx. 0.92 kg / piece |
| Testing Standard | 100% Automated Bench Flow and Pressure Testing |
Long-Distance Logistics and Mountainous Steep Slope Climbing: In cross-regional logistics transportation, trucks fully loaded with heavy cargo face long-term high-speed cruising and continuous steep slope climbing. By replacing the fuel injector with this high-pressure injector, drivers can clearly feel that the vehicle's upshifting and acceleration are more crisp, and the power output is full and does not diminish when the accelerator is pressed. At the same time, it promotes complete combustion of diesel fuel, improving climbing torque while effectively reducing overall fuel consumption.
Construction Engineering and Continuous Operation of Large Heavy-Duty Machinery: In construction sites with high dust and harsh terrain, heavy equipment frequently operates under heavy loads. This fuel injector, with its microsecond-level electronic control response and ultra-high-pressure atomization capability, ensures that the engine can still output continuous high torque even when facing drastic fluctuations in engine speed. The smooth and continuous compound action completely avoids engine stalling and misfires, ensuring efficient progress in construction.
Q: Why are your prices so much lower than local physical stores? Are they brand new?
A: We promise that all products sold are 100% brand new, high-quality parts, not recycled or refurbished parts. Because we ship directly from our own factory, eliminating the markups and rental costs of traditional physical stores and multiple layers of distributors, we can offer you the true factory price.
Q: How long after placing an order will it be shipped? How long will it take to receive it?
A: This model is a core stock item in our warehouse. After you complete payment, we will complete the inventory check, pack, and arrange for shipment within 24 to 48 hours. We cooperate with major international express delivery channels, and it usually arrives at your door within 5-9 business days.
Q: What details should be considered when arranging for a technician to install this brand-new high-pressure fuel injector?
A: High-pressure fuel systems are extremely sensitive to impurities. Before installation, please thoroughly clean the diesel tank and fuel lines, and replace the fuel filter with a brand-new, high-specification one. Ensuring a clean fuel system is a prerequisite for maximizing the peak performance of the new component and guaranteeing its extended lifespan.
Q: What should I do if I find an incorrect model number after receiving the goods, or encounter performance abnormalities during subsequent use?
A: As long as the product has not been opened or tested, its appearance and accessories are intact, and it does not affect resale, we offer a 90-day return and exchange guarantee. In addition, the product has a 12-month warranty period. If a performance failure occurs within the warranty period due to non-human-caused reasons, our after-sales customer service team will arrange for a replacement or refund as soon as possible.
