0445120261 Injector Assembly for Weichai WP5 WP7 Diesel Engine

0445120261 Injector Assembly for Weichai WP5 WP7 Diesel Engine Featured Image
  • 0445120261 Injector Assembly for Weichai WP5 WP7 Diesel Engine

Short Description:

0445120257 common‑rail fuel injector assembly is a high‑precision replacement part for Cummins ISC, ISL diesel engines (OE:5263230). It fits heavy‑duty trucks, coaches, engineering machinery and generator sets.

Product Detail

Product Tags

description

As the core fuel‑injection part for Weichai WP5/WP7 diesel engines, 0445120261 endures high‑pressure impact, frequent load‑switch vibration and mechanical shocks generated during long‑haul transportation, long‑time heavy‑duty work and continuous unit running. Standard injectors easily suffer nozzle clogging, carbon build‑up and valve fatigue in tough conditions, leading to bad atomization, incomplete combustion and heavy‑load power drop. This upgraded dedicated injector uses high‑strength wear‑resistant alloy housing and strengthened valve core. Its micron‑precision nozzle produces fine, even fuel mist to boost combustion efficiency and variable‑load power stability. Optimized inner structure keeps stable injection timing and fuel quantity, reducing backflow and pressure loss under full‑load continuous work. Reinforced construction handles shock and vibration fatigue. Each unit undergoes bench tests for flow, spray pattern and durability, offering reliable direct replacement for worn‑out OEM injectors.

product parameters

Model Number: 0445120261
Cross OE No.: 610800080073
Product Type: High‑precision Common Rail Diesel Fuel Injector Complete Assembly
Applicable Engine: Weichai WP5, WP7 Series Diesel Engine
Applicable Equipment: Heavy‑duty trucks, passenger coaches, engineering machinery, stationary generator sets
Rated Working Pressure: 1600‑1800 bar, stable high‑pressure fuel supply output
Working Temperature: ‑40℃ ~ +120℃, adaptable to extreme cold and high‑temperature harsh working environments
Material: High‑strength anti‑wear alloy steel main body, anti‑fatigue valve group, aging‑resistant high‑density sealing rubber material, anti‑corrosion precision nozzle core
Included Parts: Precision micro‑nozzle core, integrated control valve assembly, full set of original matching sealing repair accessories, mounting auxiliary parts
Manufacturing Standard: Strictly implement OEM micron‑level tolerance processing standard, consistent with original factory technical parameters
Supply Status: Finished integral assembly, fully tested, ready for direct equipment installation
Core Function: Effectively stabilize engine idle speed, restore full‑load heavy‑duty power performance, optimize fuel atomization effect, improve cylinder combustion efficiency, reduce exhaust black smoke and carbon deposition, restrain abnormal fuel consumption and solve engine power attenuation failure

advantage

• Professionally calibrated for Weichai WP5/WP7 engine characteristics, perfectly matching the ECU control logic and fuel supply parameters, maintaining stable and efficient injection performance under long‑term heavy‑load and high‑dust working conditions.
• Upgraded reinforced anti‑fatigue valve group structure, effectively resisting long‑term mechanical vibration, high‑pressure fuel impact and fuel impurity erosion, greatly delaying internal component aging and extending the overall service life of the injector.
• Adopts micron‑level precision nozzle processing technology, with uniform and delicate fuel atomization, thorough fuel combustion, significantly improving engine thermal efficiency and power output, fundamentally solving black smoke emission, weak power and jitter problems.
• Complete assembly comes with a full set of matched sealing repair kits and auxiliary accessories, supporting one‑time complete replacement, avoiding repeated purchasing of accessories, simplifying maintenance steps and reducing equipment downtime loss.
• Each production batch undergoes strict professional bench tests including flow deviation detection, spray morphology inspection, high and low temperature durability simulation and pressure stability test, with stable and consistent batch quality and zero defective rate.

FAQ

Q1: What problems can 0445120261 injector solve?
A: It resolves typical faults caused by injector aging, carbon buildup and internal mechanical wear: unstable rough idle, insufficient heavy‑load climbing power, obvious black smoke during hard acceleration, difficult cold start under low‑temperature conditions, delayed throttle feedback and abnormally rising fuel consumption, helping restore the engine’s original stable working performance.
Q2: What equipment does this injector fit?
A: Designed for Weichai WP5 / WP7 diesel engines, widely applied on heavy‑duty transport trucks, passenger coaches, off‑highway engineering machinery and stationary industrial generator sets.
Q3: How to extend injector service life?
A: Always use qualified clean diesel fuel, strictly replace fuel filters according to maintenance cycles, avoid long‑time continuous extreme full‑load operation, and keep the whole fuel system clean and unobstructed.

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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