0445120403 Injector Assembly for construction machinery

0445120403 Injector Assembly for construction machinery Featured Image
  • 0445120403 Injector Assembly for construction machinery

Short Description:

0445120400 high precision common rail fuel injector assembly is aftermarket replacement spare part for Perkins diesel engine, widely fitted on construction machinery, excavators and generator sets.

Product Detail

Product Tags

description

0445120403 common rail injector is the core fuel injection control component for construction machinery diesel engine. It precisely controls injection timing, cyclic fuel quantity, injection rate and atomization quality under high common rail pressure. The injector body adopts high-strength alloy steel. Core parts including nozzle, needle valve and control valve are strictly screened and ultra-precisely machined with micron-level clearance control. Every finished injector undergoes full item bench testing covering idle, full load, pre-injection and leakage inspection, guaranteeing outstanding injection consistency and interchangeability. Direct fit replacement without mechanical modification. Suitable for excavators, loaders and other engineering machines running under harsh field environment. It effectively resolves typical engine faults such as insufficient power, rough idle, black smoke and high fuel consumption, meeting maintenance and overhaul demands for construction machinery powertrain.

product parameters

  • Part No：0445120403
  • Applicable Engine：Construction machinery diesel engine
  • Max Working Pressure：1600bar
  • Spray Hole Quantity：7 holes
  • Spray Hole Diameter：0.17mm
  • Injection Spray Angle：154°
  • Fuel：Diesel (EN590 standard recommended; poor quality diesel accelerates wear)
  • Operating Temperature Range：-20℃ ~ +120℃
  • Response Time：≤0.35ms
  • Net Weight：0.56kg
  • Connector Type：Bosch 2-pin connector
  • Material：High strength alloy steel
  • Application：Excavator, wheel loader, construction machinery
  • Package：Individual anti-rust packing + Neutral carton packing
  • Storage suggestion：Keep dry, away from dust, moisture and corrosive gas, indoor storage

advantage

• Professional bench calibration & full inspection. Every injector is calibrated and tested on Bosch common rail bench. Test items cover idle flow, full load flow, pre-injection precision, opening pressure and return oil volume. Small injection deviation between individual injectors, excellent batch consistency, avoiding uneven fuel supply problems.
• Optimized 7-hole atomization structure. The 154° spray angle creates fine and uniform mist. Diesel mixes sufficiently with air inside cylinder. Combustion efficiency is greatly improved. It boosts power under heavy load, cuts black smoke and reduces harmful exhaust emissions.
• Strong adaptability for harsh field working conditions. Designed for construction machinery engines, fit for excavators and loaders working in dusty construction sites, frequent start-stop and variable heavy load. Stable performance under wide temperature range. Better tolerance to medium-quality diesel oil, lowering premature failure caused by impurity abrasion.
• Upgraded composite sealing design. Multiple sealing surfaces are optimized to prevent fuel seepage. It helps eliminate common faults like rough idle, slow flameout, carbon accumulation and engine shaking, extending service life of injector assembly.

FAQ 

Q1: Can this injector fit all construction machinery engines?
A1: No. Model 0445120403 injector is designed for specific construction machinery diesel engines, matching OE number 0445120403. Various construction machines adopt many different engine series with different injector internal structure and spray parameters. Before ordering, please verify engine model and old injector OE code. Wrong part will lead to weak power, heavy black smoke, rough idle and even engine mechanical damage.

Q2: What testing will be carried out before shipment?
A2: All injectors are 100% fully tested on professional common rail test bench before delivery. The test scope includes idle injection quantity, full-load injection quantity, pre-injection accuracy, injection opening pressure, return oil flow and static sealing leakage test. Products can only be packed after all indicators meet standards to minimize defective rate.

Q3: What preparation should be done before installation?
A3: Clean fuel lines thoroughly to remove metal debris and dirt. Replace fuel filter, injector copper washer and sealing ring. Check high-pressure fuel pump condition, because residual dirt and metal chips in oil circuit are the main reason for newly fitted injector early damage. Keep installation workspace clean to prevent dust entering high-pressure fuel circuit, which is especially important for field engineering machines.

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.

our warehouse

our warehouse

Pack and ship

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