Cummins · Engine application
Cummins M11 / ISM11 / QSM11 Injectors — Celect & Celect Plus
Electronic unit injectors for the Celect system — versions that look similar but do not interchange.
The M11 / ISM11 / QSM11 family runs the Cummins Celect and Celect Plus electronic unit injection system, calibrated per engine. We supply injectors for the 1998–2008 truck engines — 3411756 (with its EX631756 reference) and 4061851 — matched by the number on your old injector.
Celect and Celect Plus parts look similar but are not interchangeable. Send the stamped number from the old unit and we confirm the version before quoting.
What we supply for this engine
Part numbers listed
| Part no. | Product | Condition | MOQ |
|---|---|---|---|
3411756 | 3411756 / EX631756 EUI Injector — Cummins M11 / ISM11 / QSM11 (Celect) | New (reproduction) | 6 pcs |
4061851 | 4061851 Fuel Injector — Cummins M11 / ISM11 | New (reproduction) | Confirmed per order |
Where buyers go wrong
Mix-ups we see on this engine
Celect vs Celect Plus. Two generations of the same system — similar looks, different calibration. Match the old injector's stamped number.
ISM11 vs QSM11. Related families sharing the Celect system; injector builds still vary by application and year — confirm by part number.
Engine FAQ
Questions buyers ask about the Cummins M11 / ISM11 / QSM11
Which injectors fit the Cummins M11?
3411756 (reference EX631756) and 4061851, depending on the Celect generation and application. The stamped number on the old injector selects the version.
Are Celect and Celect Plus injectors interchangeable?
No — they look similar but the calibration differs. Confirm by the old part number before ordering.
What years does your M11 listing cover?
The 3411756 listing is compiled for the 1998–2008 Celect truck engines, as listed on our export store. Confirm the version by your old unit.
Fitment questions go to our technical team · Related reading in the buying guides.
Send the number from your old unit
We confirm the version, supply status and price for the Cummins M11 / ISM11 / QSM11 part you need.
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