0445120127 Injector Assembly for Weichai WP12 Diesel Engine

0445120127 Injector Assembly for Weichai WP12 Diesel Engine Featured Image
  • 0445120127 Injector Assembly for Weichai WP12 Diesel Engine

Short Description:

0445120126 common‑rail fuel injector assembly is a high‑precision fuel injection component specially customized for Mitsubishi D04FR diesel engine fitted on Kobelco SK140 excavator.

Product Detail

Product Tags

description

As the core fuel delivery component of Weichai WP12 diesel engine, 0445120127 bears persistent scouring from high-pressure diesel, frequent load transitions and strong mechanical vibration during long-distance transport and heavy site operations. Such working conditions easily trigger nozzle abrasion and fatigue damage of internal valve assemblies, which reduces injection precision, leads to incomplete combustion and gradual power drop. Optimized for WP12 heavy-duty operating scenarios, this injector utilizes high-rigidity wear-resistant alloy steel and reinforced anti-fatigue valve group. Its precision machined nozzle generates uniform fine mist to guarantee sufficient in-cylinder combustion. The upgraded control valve enhances injection timing and metering accuracy, cutting down internal leakage and pressure loss risks. The reinforced integral structure endures repeated high-pressure impacts over long operation cycles. Every finished injector passes strict high-pressure cycle tests, atomization inspection and dimension calibration to replace worn faulty injectors directly.

product parameters

Model Number: 0445120127
Product Type: Complete common rail diesel injector assembly
Applicable Engine: Weichai WP12 Diesel Engine
Applicable Equipment: Heavy-duty tractors and large construction machinery with Weichai WP12 engine
Rated Working Pressure: 1600 bar
Included Parts: Precision nozzle core, control valve assembly, full set of sealing accessories
Manufacturing Standard: OEM upgraded micron tolerance specification
Supply Status: Finished integral assembly ready for installation
Installation Method: Original position direct replacement
Working Condition: Long-distance heavy haulage, continuous heavy-duty operation, frequent load fluctuation
Core Function: Restore engine torque output, stabilize idle speed, optimize fuel atomization, eliminate black smoke and reduce diesel consumption

advantage

OEM Spec Matching: Produced following Weichai WP12 original technical standards. All dimensions and injection parameters match the original engine perfectly. Plug-and-play installation is supported without cutting or drilling.
Heavy-duty Condition Tuning: Calibrated for the long-time heavy load characteristics of WP12 engine. It maintains stable injection accuracy and consistent atomization under fluctuating pressure and load changes, adapting to various harsh transport and construction environments.
Integrated Assembly Cuts Downtime: The whole-unit replacement method simplifies on-site maintenance steps, shortens repair time significantly, reduces equipment standstill and lowers fleet operation and maintenance expenses.
Complete Matching Accessories: Comes with brand-new full set of sealing wearing parts. It meets daily maintenance and full engine overhaul requirements without extra accessory matching work.
Wear & Corrosion Resistant Construction: Adopting upgraded wear-resistant alloy base and composite sealing materials, it resists high-pressure diesel scouring and chemical corrosion, slows component aging and extends injector service life.

FAQ

Q1: What faulty symptoms can this 0445120127 injector solve?

A: This injector effectively fixes various failures caused by long‑term aging, internal carbon accumulation and worn injectors, including insufficient engine power, unstable jittery idle speed, black smoke during acceleration, difficult cold start in low‑temperature winter conditions, delayed throttle response and abnormally high fuel consumption under normal driving conditions.

Q2: Which engine models is 0445120127 suitable for?

A: It is specially designed and compatible with Weichai WP12 series diesel engines, widely used on matching heavy-duty tractors and large construction machinery for long-distance cargo and construction tasks.

Q3: What are the key installation precautions?

A: Thoroughly clean the fuel rail and internal pipeline impurities before installation; replace with brand‑new sealing gaskets; keep the installation environment dust‑free; avoid scratching precision nozzle parts during assembly; complete idle and acceleration tests after installation to confirm normal operation.

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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