0445120251 Injector Assembly for Cummins QSB5.9 QSB6.7 Diesel Engine

0445120251 Injector Assembly for Cummins QSB5.9 QSB6.7 Diesel Engine Featured Image
  • 0445120251 Injector Assembly for Cummins QSB5.9 QSB6.7 Diesel Engine

Short Description:

0445120250 common‑rail fuel injector assembly is high‑precision fuel injection spare part specially matched for Cummins ISBe4+ series diesel engines.

Product Detail

Product Tags

description

As the core fuel‑injection part for Cummins QSB5.9/QSB6.7 diesel engines, 0445120251 endures high‑pressure impact, frequent load‑switch vibration and mechanical shocks generated during excavation operation, long‑time heavy‑duty work and continuous unit running. Standard injectors easily suffer nozzle clogging, carbon build‑up and valve fatigue in tough conditions, leading to bad atomization, incomplete combustion and heavy‑load power drop. This upgraded dedicated injector uses high‑strength wear‑resistant alloy housing and strengthened valve core. Its micron‑precision nozzle produces fine, even fuel mist to boost combustion efficiency and variable‑load power stability. Optimized inner structure keeps stable injection timing and fuel quantity, reducing backflow and pressure loss under full‑load continuous work. Reinforced construction handles shock and vibration fatigue. Each unit undergoes bench tests for flow, spray pattern and durability, offering reliable direct replacement for worn‑out OEM injectors.

product parameters

Model Number: 0445120251
Product Type: High-precision Common Rail Diesel Fuel Injector Complete Assembly
Applicable Engine: Cummins QSB5.9, QSB6.7 Series Industrial/Engineering Diesel Engine
Applicable Equipment: Construction excavators, wheel loaders, heavy-duty transport trucks, stationary generator sets, engineering special vehicles
Rated Working Pressure: 1600‑1800 bar, stable high-pressure fuel supply output
Working Temperature: ‑40℃ ~ +120℃, adaptable to extreme cold and high-temperature harsh working environments
Material: High-strength anti-wear alloy steel main body, anti-fatigue valve group, aging-resistant high-density sealing rubber material, anti-corrosion precision nozzle core
Included Parts: Precision micro-nozzle core, integrated control valve assembly, full set of original matching sealing repair accessories, mounting auxiliary parts
Manufacturing Standard: Strictly implement OEM micron-level tolerance processing standard, consistent with original factory technical parameters
Supply Status: Finished integral assembly, fully tested, ready for direct equipment installation
Installation Method: Original vehicle original position direct plug-in replacement, no drilling, no modification, no program adjustment required

advantage

• Adopts full OEM consistent mounting size and overall structure, with ultra-high interchangeability, realizing plug-and-play direct installation without any mechanical modification or parameter adjustment.
• Professionally calibrated for Cummins QSB5.9QSB6.7 engineering engine characteristics, perfectly matching the ECU control logic and fuel supply parameters, maintaining stable and efficient injection performance under long-term heavy-load and high-dust working conditions.
• Upgraded reinforced anti-fatigue valve group structure, effectively resisting long-term mechanical vibration, high-pressure fuel impact and fuel impurity erosion, greatly delaying internal component aging and extending the overall service life of the injector.
• Adopts micron-level precision nozzle processing technology, with uniform and delicate fuel atomization, thorough fuel combustion, significantly improving engine thermal efficiency and power output, fundamentally solving black smoke emission, weak power and jitter problems.

FAQ

Q1: What problems can 0445120251 injector solve?
A: It resolves typical faults caused by injector aging, carbon buildup and internal wear: unstable idle, poor heavy‑load power, black smoke on acceleration, difficult cold start, slow throttle response and high fuel consumption, restoring engine original performance.
Q2: What equipment does this injector fit?
A: Designed for Cummins QSB5.9 / QSB6.7 diesel engines, widely used on excavators, wheel loaders, heavy‑duty trucks and generator sets.
Q3: Does it need ECU coding after installation?
A: Most QSB5.9/QSB6.7 units support plug‑and‑play without ECU coding. Only a few latest electronic versions may need simple code input for optimal effect.

warehouse

We have built four spare parts warehouses in Xuzhou, Jining, Kunshan and Changsha to provide customers from all over the world with a variety of high-quality spare parts. We can basically ship self-provided spare parts within three days after confirming the order. If the spare parts need to be adjusted or processed, they will be shipped within 7-30 days.

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