0445120328 Injector Assembly for Cummins QSB6.7 Engine

0445120328 Injector Assembly for Cummins QSB6.7 Engine Featured Image
  • 0445120328 Injector Assembly for Cummins QSB6.7 Engine

Short Description:

 0445120327 common-rail fuel injector assembly is high-precision replacement part for JAC 4-cylinder 4.8L Euro 5 diesel engine. Widely installed on JAC light & medium duty trucks for urban distribution and regional logistics.

Product Detail

Product Tags

description

As the core fuel injection component of Cummins QSB6.7 diesel power, 0445120328 withstands continuous high-pressure diesel scouring, frequent load changes and mechanical vibration in engineering equipment and medium heavy truck transport. Ordinary injectors easily suffer nozzle clogging and valve group degradation under heavy-duty cycles, resulting in uneven atomization, incomplete combustion and obvious power drop under heavy load. This injector is specially calibrated to match QSB6.7 engine performance characteristics, adopting high-strength alloy steel and reinforced control valve assembly. Precisely machined nozzle generates fine fuel mist to boost combustion efficiency. Optimized internal oil circuit stabilizes injection timing and fuel delivery volume, reducing back-leakage risk for long-hour operation. Reinforced integrated construction resists cyclic pressure shock and vibration. Every finished injector passes bench inspection of fuel flow, spray pattern and durability test for reliable substitution of aged OEM injectors.

product parameters

Model Number: 0445120328
Applicable Engine: Cummins QSB6.7 Diesel Engine
Applicable Equipment: Construction machinery, medium & heavy-duty trucks
Rated Working Pressure: 1600‑1800 bar
Working Temperature: ‑30℃ ~ +125℃
Material: High‑strength wear‑resistant alloy steel, ageing‑proof high‑performance sealing compound
Included Parts: Precision nozzle core, control-valve assembly, matched sealing repair kit
Manufacturing Standard: Aftermarket upgraded micron‑level tolerance specification
Supply Status: Finished integral assembly ready for field mounting
Installation Method: Original‑position direct replacement
Working Condition: Heavy-duty haulage, continuous long-hour operation, mountain climbing, variable load cycles
Core Function: Boost heavy-load power, stabilize idle speed, improve fuel atomization, reduce exhaust smoke and restrain abnormal fuel consumption

advantage

・Calibrated for Engineering Heavy-duty Application: Tuned for QSB6.7 engine, maintains stable injection performance even under poor fuel quality and continuous heavy workload.
・Whole-Unit Replacement Reduces Equipment Downtime: Complete assembly replacement simplifies on-site repair steps, shortens equipment idle period and cuts fleet operation cost.
・Matched Sealing Repair Kit Attached: Brand-new sealing accessories are supplied together, meeting maintenance and overhaul demands without extra purchasing.
・Batch-wise Bench Testing: Every batch passes flow deviation test, spray morphology inspection and durability verification, ensuring consistent performance between batches.
・Reinforced Anti-Wear Valve Group: Upgraded valve assembly resists erosion from fuel impurities and cyclic pressure impact, slowing internal wear and extending service life.

FAQ 

Q1: What faulty symptoms can this 0445120328 injector solve?

A: It improves common faults caused by nozzle carbon coking and internal component wear, including insufficient power under heavy load, unstable idle speed, exhaust smoke, slow throttle response and abnormal fuel consumption rise.

Q2: What engines and equipment is 0445120328 suitable for?

A: It is specially adapted for Cummins QSB6.7 diesel engines, widely used on construction machinery and medium heavy-duty trucks.

Q3: Is ECU coding required after installation?

A: Most QSB6.7 equipment supports plug-and-play direct replacement. Individual updated ECUs need corresponding injector code input to achieve optimal fuel supply matching.

Q4: What are the key installation precautions?

A: Flush fuel rail and pipelines thoroughly to remove residual impurities; install brand-new sealing parts; ensure dust-free assembly environment; perform idle and heavy-load test after installation and check all joints for fuel leakage.

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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