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Service bulletin C2118

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)
TypeService bulletin
NHTSA id10168151
Published by NHTSA2019-11-25
Manufacturer's numberC2118
Manufacturer's date2019-10-22
NHTSA componentENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL

NHTSA's summary

This field action authorizes certified repair locations to upfit certain ISB, ISC, and ISL CM2250 engines with an improved SCR Catalyst.

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, Exhaust and emissions

Vehicles listed
CUMMINS ISB6.7
CUMMINS ISC
CUMMINS ISL

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