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Emissions C2724

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeEmissions
NHTSA id11010738
Published by NHTSA2024-11-22
Manufacturer's numberC2724
Manufacturer's date2023-12-29
Campaign id or software versionC2724
NHTSA componentENGINE

NHTSA's summary

This owner notification letter informs owners that Cummins Inc. has launched a campaign that may affect their X15 engine(s). The subject engines may not be meeting emissions requirements because of an incorrect SCR catalyst unit which may cause elevated NOx and ammonia emissions from the tailpipe.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Engine

Vehicles listed
CUMMINS X15

Listing a model year does not mean every vehicle of it is concerned: the document says which.