0445120474 Injector Assembly for Weichai Diesel Engine

0445120474 Injector Assembly for Weichai Diesel Engine Featured Image
  • 0445120474 Injector Assembly for Weichai Diesel Engine

Short Description:

 0445120462 high precision common rail fuel injector assembly is aftermarket replacement spare part for Weichai WP10H diesel engine, widely fitted on heavy-duty trucks.

Product Detail

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description

0445120474 common rail injector is the core fuel injection control component of Weichai WP10 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 construction machinery working on long haul routes with heavy cargo 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 WP10 powertrain.

product parameters

  • Part No：0445120474
  • Type：Common rail electromagnetic fuel injector
  • Applicable Engine：Weichai WP10 diesel engine
  • Max Working Pressure：1600bar
  • Spray Hole Quantity：8 holes
  • Fuel：Diesel (EN590 standard recommended; poor quality diesel accelerates wear)
  • Operating Temperature Range：-20℃ ~ +120℃
  • Response Time：≤0.35ms
  • Solenoid Coil Resistance：~3.0Ω
  • Net Weight：0.57kg
  • Gross Weight：0.77kg
  • Connector Type：Bosch 2-pin connector
  • Material：High strength alloy steel
  • Application：Heavy duty truck, construction machinery
  • Package：Individual anti-rust packing + Neutral carton packing
  • Storage suggestion：Keep dry, away from dust, moisture and corrosive gas, indoor storage

advantage

• High-precision matched internal components. The injector body is forged from high strength alloy steel. Core needle valve, nozzle and control valve are carefully selected, processed to micron tolerance. It resists dripping, internal and external oil leakage under continuous high pressure, keeps injection action sensitive and stable, reduces stuck valve risks.
• Optimized 8-hole atomization structure. The 144° spray angle creates fine and uniform mist. Diesel mixes sufficiently with air inside cylinder. Combustion efficiency is greatly improved. It maintains stable power output under heavy load and uphill driving, cuts black smoke and reduces harmful exhaust emissions.
• Strong adaptability for heavy-duty truck and engineering machinery working conditions. Designed for Weichai WP10 engine, fit for heavy trucks and construction machinery with long-distance transportation, continuous heavy load and frequent climbing. Stable performance under wide temperature range. Better tolerance to commercial diesel oil, lowering premature failure caused by impurity abrasion.
• 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 0445120474 injector is dedicated for Weichai WP10 diesel engine, matching OE number 1000400254. 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.

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: Is coding or calibration needed after installation?
A3: The injector is pre-calibrated on test bench before leaving factory and can be installed directly. If multiple injectors are replaced at the same time or fault codes exist in ECU, use professional diagnostic scanner to clear codes and perform injector IQA code writing and quantity compensation learning for smoother idle and better fuel economy.

Q4: Can I order bulk quantity and customized packaging?
A4: 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.

our warehouse

our warehouse

Pack and ship

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