Caterpillar · Engine application
CAT C15 & C18 Injector Nozzle Assemblies
Injector assemblies for the large CAT engine families — confirmed by the number on the old unit.
The C15 and C18 share some components but injector calibration differs by application. We supply the 253-0616 injector nozzle assembly listed for both families, confirmed against the stamped number on your old unit before quotation.
For numbers you don't see listed, send the complete old part number — the catalog covers 136 numbers and pages open as fitment data is confirmed.
What we supply for this engine
Part numbers listed
| Part no. | Product | Condition | MOQ |
|---|---|---|---|
253-0616 | 253-0616 Injector Nozzle Assembly — CAT C15 / C18 | New (reproduction) | 1 pc |
Where buyers go wrong
Mix-ups we see on this engine
Shared parts ≠ shared calibration. C15 and C18 share components, but injector calibration differs by application — confirm by the old part number, not by engine family name.
Engine FAQ
Questions buyers ask about the CAT C15 / C18
Do C15 and C18 share injectors?
They share some components, but injector calibration differs by application. Confirm by the number on the old unit before ordering.
Is 253-0616 a complete injector?
It is supplied as an injector nozzle assembly for the C15 / C18 applications, as listed on our export store. Confirm by the old part number.
Can you supply other C15 / C18 numbers?
Send the complete number from your old unit — we check it against the 136-number catalog and reply with supply status.
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 CAT C15 / C18 part you need.
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