0445120412 Injector Assembly for Weichai H1 EU5 257KW Diesel Engine

0445120412 Injector Assembly for Weichai H1 EU5 257KW Diesel Engine Featured Image
  • 0445120412 Injector Assembly for Weichai H1 EU5 257KW Diesel Engine

Short Description:

0445120403 high precision common rail fuel injector assembly is aftermarket replacement spare part for construction machinery diesel engines, widely fitted on excavators, wheel loaders and engineering equipment.

Product Detail

Product Tags

description

0445120412 common rail injector is the core fuel injection control component of Weichai H1 EU5 257KW 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 heavy-duty trucks and long-distance logistics transport under high-power continuous load. It effectively resolves typical engine faults such as insufficient power, rough idle, black smoke and high fuel consumption, meeting maintenance and overhaul demands for Weichai H1 Euro5 powertrain.

product parameters

  • Part No：0445120412
  • Applicable Engine：Weichai H1 EU5 257KW diesel engine
  • Max Working Pressure：1600bar
  • Spray Hole Quantity：8 holes
  • Spray Hole Diameter：0.17mm
  • Injection Spray Angle：153°
  • Fuel：Diesel (EN590 standard recommended; poor quality diesel accelerates wear)
  • Operating Temperature Range：-20℃ ~ +120℃
  • Net Weight：0.57kg
  • Gross Weight：0.77kg
  • Connector Type：Bosch 2-pin connector
  • Material：High strength alloy steel
  • Application：Heavy duty truck, long-haul logistics vehicle
  • 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 8-hole atomization structure. The 153° spray angle creates fine and uniform mist. Diesel mixes sufficiently with air inside cylinder. Combustion efficiency is greatly improved. It maintains stable high power output under heavy load, cuts black smoke and reduces harmful exhaust emissions to meet Euro 5 emission requirements.
• Strong adaptability for long-haul heavy-duty transport. Designed for Weichai H1 EU5 257KW high-power engine, fit for heavy trucks running continuous high-load operation, frequent climbing and variable load. Stable performance under wide temperature range. Better tolerance to commercial 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.
• Direct replacement with good cost performance. Installation dimensions and interfaces follow original factory specifications. No pipeline modification required. It is an economical aftermarket spare part for engine overhaul and routine maintenance, helping customers cut maintenance expense.

FAQ 

Q1: Can this injector fit all Weichai engines?
A1: No. Model 0445120412 injector is dedicated for Weichai H1 EU5 257KW engine, matching OE number 1000208277. Weichai has many different engine series adopting 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, and it may trigger emission fault codes for Euro5 systems.

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: Can I order bulk quantity and customized packaging?
A3: Yes, bulk wholesale is available. Each injector is packed separately with anti-rust protection, neutral carton as standard package. Custom logo packaging is supported for large batch orders.

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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