This heavy-duty high-pressure fuel pump assembly (standard part identification code: 3015970, common interchangeable and cross-reference part numbers include 3015970PX, 3015970RX, 3015970NX, etc., mainly compatible with 14.0L N14 and NT855 series heavy-duty diesel engine power platforms, widely used in large tractor-trailer trucks, mining vehicles, and industrial generator sets) is specially manufactured for high-pressure fuel supply systems. As the power source of the entire diesel supply system, it bears the core responsibility of establishing and maintaining low-pressure diesel fuel at ultra-high steady-state pressure, accurately delivering it to each injection terminal, ensuring that the fuel supply quantity and pressure fully meet the combustion requirements of the engine under different loads.
The pump body structure uses high-density forged alloy and reinforced plunger components, combined with a low-friction hardened coating, significantly improving pressure resistance, wear resistance, and chemical corrosion resistance. After the equipment is refitted and loaded, operators and fleet maintenance personnel will experience significant performance improvements: rapid and crisp start-up; quick and stable oil pressure build-up at low idle speeds; and sustained, powerful performance under heavy loads or continuous operation of full-power generators, without idling fluctuations or high-load stalling, effectively ensuring fuel supply efficiency and machine uptime.
Advantages: Precision manufacturing in a physical factory with comprehensive quality control throughout the entire process.
Problems Solved: Addresses common issues such as excessive tolerances in parts caused by third-party OEM distribution, high-pressure oil seal leakage, and slow oil pressure build-up, while reducing procurement costs associated with multi-level distribution.
Value Brought: Strict full-process production management in a standardized self-operated factory eliminates intermediate costs, ensuring high consistency in the pressure and flow parameters of each high-pressure pump, providing a solid guarantee for long-term stable equipment operation.
Advantages: Automated ultra-high-pressure digital test bench for rigorous quality inspection.
Problem Solved: Addressing the issue of pressure relief, jamming, and response delays that commonly occur in low-end heavy-duty fuel pumps under complex operating conditions, leading to reduced engine power or frequent downtime.
Value Brought: 100% of fuel pumps undergo digital control frame testing before leaving the factory, simulating extreme high-pressure and high-temperature conditions to test pressure stability and sealing response, ensuring immediate usability upon installation and significantly saving time and costs associated with disassembly, assembly, and debugging.
Advantages: Large-scale warehousing with readily available stock and rapid packaging and shipping.
Problem Solved: Addressing the issue of delays and costly losses caused by fuel pump failures in heavy-duty trucks and engineering power generation equipment, which are high-frequency productivity tools.
Value Brought: Warehousing centers maintain a large inventory of readily available stock, enabling packaging and shipping within 24 hours of order confirmation, significantly shortening supply chain waiting times and helping fleets and project owners quickly restore production capacity.
Advantages: Aerospace-grade hardened plungers and corrosion-resistant sealing components.
Problem Solved: Addressing the issue of early wear, scoring, and pressure relief in internal plunger components caused by differences in diesel fuel impurities and lubrication levels across different regions.
Value Brought: The core plunger assembly utilizes a special alloy quenching treatment and a low-friction surface layer, significantly improving wear resistance and corrosion resistance. It maintains high-pressure, stable oil supply even in harsh environments, reducing frequent maintenance costs.
| Parameter Name | Parameter Value |
|---|---|
| Product Name | Heavy-Duty Diesel Engine High-Pressure Fuel Pump Assembly |
| Standard Part Number | 3015970 |
| Interchangeable Part Numbers | 3015970PX / 3015970RX / 3015970NX |
| Applicable Engine Platform | N14 / NT855 Series 14.0L Diesel Engines |
| Fuel System Type | High-Pressure Diesel Supply System |
| Pump Body Material | High-Strength Forged Alloy Steel |
| Internal Plunger Material | Special Hardened Bearing Steel / DLC Wear-Resistant Coating |
| Maximum Working Pressure | Ultra-High Pressure Steady-State Output |
| Operating Temperature Range | -40°C to +120°C |
| Internal Sealing Components | High-Temperature and High-Pressure Resistant Special Fluororubber (FKM) |
| Net Weight | Approx. 14.5 kg / unit |
| Testing and Certification Standards | 100% Automated Bench Test for Full-Condition Pressure and Sealing |
Long-haul heavy-duty transportation and trunk line tractor conditions: Heavy-duty tractor trucks in inter-provincial trunk logistics often operate under full load and high load conditions, placing extremely high demands on the continuous fuel supply capacity of the high-pressure oil pump. When truck drivers notice weak acceleration or insufficient oil pressure causing engine power reduction during uphill driving, the maintenance team promptly replaces this high-pressure oil pump. After replacement, oil pressure builds up quickly and stably, providing ample and smooth acceleration under heavy loads, ensuring timely and efficient long-haul transportation.
Large-scale engineering generator sets and continuous power supply scenarios in the field: Generator sets generate electricity continuously and uninterruptedly at full load in field mining areas or construction sites. When the unit experiences abnormalities such as start-up delays or severe fluctuations in speed and voltage when the load increases, on-site technicians promptly replace the high-pressure oil pump. Stable fuel pressure supply ensures that the engine maintains a constant speed when operating at full power, guaranteeing continuous and stable power output.
Q: Can I install the product directly after receiving it? Is additional calibration required?
A: Each high-pressure oil pump has undergone full-condition pressure and flow calibration before leaving the factory. Provided the fuel lines are clean, a professional technician can install it directly using it according to the standard connector torque.
Q: What is the delivery time and inventory status for bulk purchases?
A: We have our own production base and large warehouse, and we maintain a large inventory of this model. Standard orders can be shipped within 24-48 hours, and large-volume orders can also be quickly produced by the factory.
Q: What quality inspections does the product undergo before leaving the factory?
A: All oil pumps are assembled in a Class 100 cleanroom and undergo 100% high-temperature, ultra-high-pressure dynamic bench testing. Strict monitoring of build-up pressure, return oil volume, and sealing performance ensures stable performance after installation.
Q: What is the warranty period for the product? How are quality issues handled?
A: We provide a 12-month warranty for this product. During the warranty period, in the event of a performance failure caused by non-human factors, we will provide a fast replacement or after-sales technical support to protect your rights.
