104649-5250 Ve Fuel Injection Pump Np-Ve4/9f1250lnp1035 for Isuzu C240 Engine

<Product Description>
This precision-engineered diesel distributor-type high-pressure fuel injection pump assembly (Part ID: 104649-5250 / 1046495250; common OE cross-references include 104749-5250, 9461615250, 8-97175-924-0, 8971759240, etc.) is designed for construction and agricultural machinery. It is primarily compatible with the 4JG2/4JG2T series 3.1L four-cylinder diesel engine platform and is widely used in small-to-medium crawler excavators, forklifts, loaders, and light commercial construction vehicles. Serving as the core pressurization and metered distribution unit within the axial-piston distributor fuel system, it efficiently boosts low-pressure diesel and precisely distributes it to each cylinder's injector according to the engine's firing order, ensuring a steady fuel supply to the powertrain under various operating conditions.

The pump body assembly is constructed from high-strength forged alloy. Its internal rotating distributor plunger assembly and injection timing advance mechanism utilize specially selected, high-hardness bearing steel; surfaces undergo precision grinding and are treated with anti-corrosion, wear-resistant coatings to effectively prevent wear and pressure loss caused by diesel impurities. Upon installation, technicians and operators will notice immediate improvements in power performance: rapid, clean cold starts and smooth, quiet idling. During heavy-load excavation, dozing, or continuous hill-climbing, throttle response is crisp and powerful with seamless, lag-free output. Additionally, the unit reduces black smoke emissions while delivering satisfying fuel efficiency and stable, responsive handling.
</Product Description>

<Product Advantages>
Direct manufacturing from the source factory with standardized quality control. By eliminating intermediary distribution steps, this product effectively reduces procurement costs while mitigating issues such as excessive cumulative tolerances, uneven fuel delivery pressure across cylinders, and risks of high-pressure leakage. Precision control across the entire production process—leveraged by standardized manufacturing bases and the elimination of intermediary markups—ensures highly consistent fuel supply pressure and flow rates across all cylinders, thereby reducing maintenance budgets while providing reliable, robust power for equipment operation.

Rigorous quality inspection via ultra-high-pressure digital dynamic test benches. This process addresses common issues associated with low-quality parts—such as response lag, pressure-relief valve sticking (causing engine misfires and vibration), and the wasted time and expense of repeated disassembly and adjustment. Every pump assembly undergoes automated testing before leaving the factory; flow rates and sealing integrity are precisely calibrated across various pressure ranges under simulated real-world conditions of high temperature and ultra-high pressure. This ensures "ready-to-install" performance, drastically saving time and costs associated with installation and tuning.

Large-scale warehousing and rapid shipping response. Recognizing that construction and agricultural machinery are high-utilization assets—where fuel system failures leading to downtime can result in costly delays, breach-of-contract penalties, and lost productivity—our warehouse maintains ample stock of popular specifications year-round. Upon order confirmation, we prioritize rapid processing and dispatch within 24–48 hours, significantly shortening logistics cycles to help fleets and owners quickly restore equipment availability and avoid losses caused by downtime.

Specialized quenched alloy plungers with wear-resistant protective coatings. Designed to combat premature wear and valve spool seizing caused by regional variations in diesel lubricity and sulfur content. Core valve components utilize high-strength specialty bearing steel and undergo surface hardening and anti-corrosion treatments. This significantly enhances fatigue and wear resistance, ensuring stable performance even under harsh conditions and prolonged, high-load operation, thereby avoiding the extra costs associated with frequent repairs. </Product Advantages>

<Specifications Table>

<Application Scenario>
Small-scale excavators and earthmoving operations: Crawler excavators performing heavy-duty excavation and material handling at construction sites, often operating under continuous high loads for extended periods. When operators notice sluggish movement during digging and swinging, severe vibration at low idle, or engine stalling under high load, mechanics replace the distributor-type high-pressure fuel pump. Following replacement, fuel pressure builds smoothly and rapidly, engine power is restored, and throttle response becomes crisp and responsive, ensuring project schedules remain on track. Industrial Forklifts and High-Frequency Material Handling: Diesel forklifts operating in logistics parks and factory workshops frequently load, unload, and transport heavy materials, requiring constant starting and acceleration. When equipment experiences hard starting, sluggishness on inclines, or black exhaust smoke, maintenance teams can promptly install this high-pressure distributor-type fuel injection pump. Its precise fuel metering and distribution restore smooth engine power output, significantly enhancing operational efficiency and handling.

Q: Can the fuel pump be installed and used immediately upon receipt? Is additional calibration required?
A: Each high-pressure pump undergoes factory calibration for pressure, flow rate, and fuel injection timing across all operating conditions. Provided the fuel lines are clean, professional technicians can install the unit using standard torque specifications and bleed air from the fuel system to put it into immediate service.

Q: What are the lead times and stock availability for bulk orders?
A: We operate our own production facilities and warehousing centers, maintaining substantial, year-round inventory of this model. Standard orders are packed and shipped within 24–48 hours of confirmation, while bulk orders can be quickly scheduled for production.

Q: What quality inspections does the product undergo before leaving the factory?
A: All products are assembled in a Class 100 cleanroom environment and undergo 100% dynamic bench testing under high-temperature and high-pressure conditions. We rigorously monitor pressure buildup, distribution uniformity, and sealing performance to ensure the product meets quality standards for vehicle installation.

Q: What is the warranty period, and how is after-sales service handled?
A: We offer a 12-month warranty on this product. Should any performance failure occur due to non-human factors during the warranty period, we provide rapid technical support and replacement services to protect your interests.