HP0 Fuel Pump 094000-0381 094000-0380 6156-71-1110 for Komatsu SAA6d125e-3 6D125 PC400-7 PC450-7 PC460-7

This heavy-duty high-pressure common-rail diesel fuel supply pump assembly (Part IDs: 094000-0380 / 094000-0383 / 094000-038#; common OE cross-references include ME302144, ME302143, ME305618, etc.) is precision-engineered for the 6M60 / 6M60-T / 6M60-1AT / 6M60-2AT series of inline-six turbocharged heavy-duty diesel engines. It is widely installed in "Fighter" series medium-to-heavy trucks, extended-wheelbase box trucks, intercity buses, and tracked construction machinery. Serving as the core power source for generating ultra-high rail pressure and metering fuel intake within the electronically controlled common-rail system, it is driven by the crankshaft gear to efficiently compress low-pressure diesel to pressures exceeding 1,000 bar and deliver it continuously to the common rail. This ensures that the high-torque engine receives ample, consistent fuel pressure support across varying load conditions.

The pump body is manufactured from a single piece of high-density forged alloy steel. Internal plunger assemblies and PCV/SCV electromagnetic metering valve spools undergo micron-level precision grinding and cryogenic hardening treatments, featuring a high-adhesion, wear-resistant hard coating that significantly reduces internal mechanical friction and the risk of high-pressure leakage. Upon installation, operators and fleet mechanics will notice immediate improvements in operational performance: rapid and decisive cold starts, smooth idling with low-frequency, balanced mechanical noise, and—whether starting under full load, climbing steep gradients, or cruising at high speeds with heavy loads—responsive, robust power delivery that fully restores the engine's design output while maintaining excellent fuel efficiency.

Product Advantages

Standardized, intelligent manufacturing from the source factory and direct supply chain distribution. Providing high-quality, standardized components to address issues caused by excessive intermediaries—such as loose assembly tolerances, unstable fuel supply pressure, and budget overruns. By utilizing in-house production lines equipped with high-precision CNC machine tools and strict process controls, we eliminate intermediate markups and ensure highly linear consistency in fuel flow and pressure across all operating conditions; this reduces maintenance procurement costs while providing long-lasting, reliable power support for vehicles and engineering equipment.

Rigorous testing on ultra-high-pressure digital dynamic test benches. We address common issues found in inferior replacement pumps—such as excessive flow pulsation, sluggish high-pressure buildup (causing sluggish acceleration), and wasted labor hours from repeated repairs. Every fuel pump assembly undergoes 100% dynamic testing on an automated digital test bench after assembly, simulating extreme high-temperature and ultra-high-pressure conditions to verify starting pressure, rated flow, and return-line leakage. This ensures the unit is ready for immediate installation, eliminating the time and cost of secondary adjustments.

Large-scale warehousing with ready stock and rapid dispatch. Recognizing that commercial transport vehicles and construction machinery are high-turnover productivity assets—where fuel pump failure leads to costly downtime—we maintain ample inventory of these core models. Orders are securely packaged immediately upon verification and shipped within 24–48 hours, drastically shortening logistics transit times and helping fleets and end-users quickly restore operational capacity.

Precision-engineered ultra-hard alloy components and corrosion/wear-resistant coating technology. We tackle problems caused by low-lubricity or sulfur-contaminated diesel, which often lead to scoring and seizing of internal plungers or seal wear and pressure loss. The core internal pressurizing plungers and camshafts are crafted from premium high-alloy bearing steel and treated with advanced vacuum heat treatment and corrosion-resistant coatings. This exponentially increases resistance to impact fatigue and wear, ensuring stable performance during prolonged, high-load operation in harsh conditions and reducing expenses associated with downtime and repairs.

Specifications

Application Scenarios

Long-haul logistics for medium-to-heavy-duty trucks: Trucks equipped with 6M60 series engines operating on long-distance highway routes under full load, facing frequent starts, high-speed cruising, and mountain road climbs. When vehicles exhibit sluggish acceleration, failure to build common-rail pressure under heavy loads, or a flashing fuel system warning light, the maintenance team installs this high-pressure fuel supply pump. Post-installation, rail pressure builds rapidly and steadily, and acceleration under heavy loads is robust and responsive, reliably ensuring on-time delivery for long-haul logistics.

Construction Machinery and Specialized Operations: Medium-sized excavators and construction cranes often operate under continuous high loads in environments characterized by heavy dust and vibration, such as construction sites and quarries. When equipment experiences hard cold starts, boom stalls under load, or unstable idle speeds, on-site maintenance personnel promptly replace the unit with this common-rail high-pressure fuel pump assembly. The steady, precise delivery of ultra-high-pressure fuel instantly restores the engine to its rated torque, ensuring the project proceeds on schedule.

Q: Can the new high-pressure fuel pump be installed and used immediately upon receipt? What precautions should be taken during installation?
A: The product is calibrated on a professional test bench before leaving the factory and is ready for immediate installation. Before installation, thoroughly clean the fuel lines and replace the diesel filter with a new one. Align the timing gear marks during installation, and after tightening the lines, manually prime the pump to bleed air from the system; this prevents damage to precision internal components caused by dry running.

Q: What are the shipping lead times and stock availability for bulk orders?
A: We operate our own manufacturing plant and a professional warehouse center, maintaining substantial safety stock for this popular model. Standard bulk orders are typically packaged and shipped within 24–48 hours of confirmation, while large-scale engineering orders can be quickly accommodated through flexible production scheduling.

Q: How are quality control and testing standards managed before the product leaves the factory?
A: All common-rail pumps are assembled in a dust-free cleanroom and undergo dynamic inspection on fully automated digital test benches. We rigorously test starting pressure buildup, flow output at rated speed, fuel return leakage, and the response sensitivity of the electronic metering valve to ensure every unit meets performance standards. Q: What is the warranty period for this product, and how are post-sales inquiries handled?
A: We provide a 12-month warranty for this high-pressure fuel supply pump model. Should any performance issues arise during the warranty period—provided they are not caused by external physical damage or contamination from fuel impurities—we offer rapid technical consultation, replacement units, or post-sales support to ensure a worry-free purchasing experience.