Extrusion line record
Cummins Fuel Injector 4326780 / 4326781 for ISX and QSX Engines
Cummins fuel injector 4326780 (4326780PX) with related number 4326781, supplied as a replacement injector for Cummins ISX and QSX engine applications.
Machine specification
Output, material and line configuration in one view.
Die set, cooling, speed and packing notes remain visible for plant buyers.
| Part Number | 4326780 (4326780PX) |
|---|---|
| Related Number | 4326781 |
| Application | Cummins ISX and QSX engine applications |
Product Detail
Cummins Fuel Injector 4326780 / 4326781
4326780 is a Cummins fuel injector, listed with the related number 4326781 and the 4326780PX reference. It is supplied as a replacement injector for Cummins ISX and QSX engine applications.
Where This Injector Is Used
- Part number: 4326780 (4326780PX)
- Related number: 4326781
- Application: Cummins ISX and QSX engine applications
Injector Specifications
| Item | Value |
|---|---|
| Part number | 4326780 (4326780PX) |
| Related number | 4326781 |
| Application | Cummins ISX and QSX engine applications |
Why These Injectors Are Replaced
On the ISX and QSX the injector works at high pressure and a heavy duty cycle. The control valve and nozzle wear over time, so the injected quantity drifts from the value the ECU expects. Operators notice hard starting, a rough idle, falling power and smoke, and the ECU eventually stores a correction-limit fault.
Fitting Notes
- Confirm the number on the original injector before ordering; these injectors are matched to the engine variant.
- Renew the copper washer and O-rings and keep the injector bore clean.
- Recode the injector where the engine management requires it.
Supply and Service
MOQ 1 piece. Neutral, original or customised packaging available.
Request a line quote
Send material, output and plant requirements.
We will prepare a line, tooling and commissioning route.