1. Product Description

This industrial heavy-duty high-pressure common rail injector is developed for premium commercial vehicles and engineering power units. Powered by ultra-high pressure precision injection technology, it optimizes fuel combustion performance comprehensively. After replacement, the engine runs with a steady and compact sound and achieves instant cold start. It delivers strong and sustained power during heavy-load climbing and long-distance highway cruising, bringing reliable driving experience and better fuel economy.

2. Product Advantages 

Extreme Pressure & Wear Resistance for All-weather Heavy-duty Operation Given the frequent operation and ultra-long mileage of commercial vehicles, the valve spool and needle valve assembly are coated with PVD (Physical Vapor Deposition) wear-resistant film. It maintains accurate injection performance with zero deviation during long-term operation under extreme high temperature and continuous heavy loads, minimizing the risk of unplanned downtime.

Stepped Dynamic Control to Reduce Emissions and Carbon Deposits The uniquely designed nozzle flow passage, combined with intelligent ECU signals, ensures optimal fuel spray distribution and air-fuel mixture. With microsecond-level multi-stage cut-off injection, fuel burns completely. It fundamentally eliminates black exhaust smoke, restrains carbon buildup inside the engine and extends the service life of after-treatment systems such as DPF.

Modular Direct Replacement to Cut Overall Replacement Costs Manufactured in strict compliance with international OEM standards, it features 100% perfect matching with original parts in electrical connectors, physical dimensions and fuel flow characteristics. No wiring modification or ECU parameter adjustment is required for plug-and-play installation. Fleet owners and maintenance technicians can obtain OEM-level performance at a cost-effective price.

3. Technical Parameters

4. Compatible Vehicles & Equipment

This high-pressure common rail injector is widely used on mainstream medium trucks, light trucks, coaches and various construction machinery equipped with ISF 3.8 / QSF 3.8 powertrains:

FOTON: Premium light and medium trucks including Aumark and Ollin models fitted with Cum-mins 3.8L engines.

JAC: Shuailing, Junling and other series of medium & light trucks with Cum-mins powertrain.

 Construction & Special Vehicles: Small excavators, loaders, airport tractors and aerial work platforms equipped with Cum-mins QSF 3.8 industrial engines.

Medium Coaches: City buses and highway coaches of Yutong, King Long and other brands powered by Cum-mins ISF 3.8 engines.

Reminder: To ensure correct part selection, please check the stamped part number 0445120367 or part number 5283840 on your original injector before purchase.