0445120329 Injector Assembly for Dongfeng Cummins ISDe4 Engine

0445120329 Injector Assembly for Dongfeng Cummins ISDe4 Engine Featured Image
  • 0445120329 Injector Assembly for Dongfeng Cummins ISDe4 Engine

Short Description:

0445120328 common-rail fuel injector assembly is high-precision replacement part for Cummins QSB6.7 diesel engine, Widely fitted on construction machinery and medium heavy trucks powered by QSB6.7 engine.

Product Detail

Product Tags

description

As the core fuel injection component of Dongfeng Cummins ISDe4 diesel power, 0445120329 endures continuous high-pressure diesel scouring, frequent load changes and mechanical vibration during highway transportation and passenger transport. Ordinary injectors easily suffer nozzle clogging and valve group degradation under repeated start-stop operation, resulting in uneven atomization, incomplete combustion and obvious power drop under medium-heavy load. This injector is specially calibrated to match ISDe4 engine emission and performance parameters, adopting high-strength alloy steel and reinforced control valve assembly. Precisely machined nozzle generates fine fuel mist to boost combustion efficiency and meet emission requirements. 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: 0445120329
Applicable Engine: Dongfeng Cummins ISDe4 Diesel Engine
Applicable Equipment: Dongfeng medium trucks and buses
Rated Working Pressure: 1550‑1750 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
Core Function: Improve medium-heavy load power, stabilize idle speed, refine fuel atomization, reduce exhaust smoke and restrain abnormal fuel consumption

advantage

・Calibrated for ISDe4 Engine: Tuned for Dongfeng Cummins ISDe4, stable injection performance under frequent start-stop and medium-heavy load.
・Whole-Unit Replacement Reduces Equipment Downtime: Complete assembly replacement simplifies on-site repair steps, shortens vehicle 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 for frequent start-stop vehicles.

FAQ 

Q1: What faulty symptoms can this 0445120329 injector solve?

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

Q2: What engines and vehicles is 0445120329 suitable for?

A: It is specially adapted for Dongfeng Cummins ISDe4 diesel engines, widely fitted on Dongfeng medium trucks and passenger buses.

Q3: Is ECU coding required after installation?

A: Most ISDe4 vehicles support 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 medium-heavy load test after installation and check all joints for fuel leakage.

Q5: How to extend injector service life for medium trucks and buses?

A: Use qualified diesel fuel and replace fuel filter on schedule; avoid long-time continuous overload operation; reduce frequent sharp acceleration; keep fuel system clean to reduce impurity abrasion inside the injector.

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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Pack and ship

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