Common Rail 51101009125 Injector Encyclopedia

by 27/11/2022

Fuel injector 51101009125 is the most critical and complex part in common rail system, and it is also the most difficult part in design and process. By controlling the opening and closing of the solenoid valve, the ECU injects the fuel in the high-pressure fuel rail into the combustion chamber with the best fuel injection timing, fuel injection quantity and fuel injection rate.


In order to achieve an effective of 51101009125 injector’s fuel injection starting point and precise fuel injection quantity, common rail system uses a special fuel injector with hydraulic servo system and electronic control element (solenoid valve).


The fuel injector 51101009125 is composed of an orifice nozzle which similar to traditional fuel injector, a hydraulic servo system (control piston, control metering hole, etc.), a solenoid valve, etc.



The Function of Fuel Injector 51101009125


  1. Increase oil pressure (constant pressure): Increase injection pressure to 10 ~ 20 MPa.
  2. Adjust fuel injection time (timing): Controls starting and stopping fuel injectionat specified time.
  3. Adjust the fuel injection quantity (quantitative): According to the working conditions of diesel engine, change the fuel injection quantity to adjust the speed and power of diesel engine.


51101009125 Injector’s Part Number Location

The injector part number of 51101009125 shows as follows:


No. Name
A brand, logo, part number,

series number

B nozzle part number

Copyright Statement

The copyright of “Common Rail 51101009125 Injector Encyclopedia Knowledge” belongs to Shenzhen Shumatt Technology Co., Ltd, has been authorized to use by Shenzhen Shumatt Technology Co., Ltd. Any users should indicate the resource from Shenzhen Shumatt Technology Co., Ltd when download, reproduce, distribute and use these contents. Without written permission by Shenzhen Shumatt Technology Co., Ltd, the users will bear legal responsibility for reproducing, re-posting, distributing or using the contents. If there is any question, please contact us through


If you are interested in further information of fuel injector 51101009125 technical data, please check:


For more information of’s copyright statement, please check: