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Service bulletin EFN-E-10001

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 id10033606
Published by NHTSA2010-08-28
Manufacturer's numberEFN-E-10001
Manufacturer's date2010-01-12
NHTSA componentENGINE AND ENGINE COOLING:ENGINE:GASOLINE; ENGINE AND ENGINE COOLING:ENGINE:DIESEL

NHTSA's summary

CUMMINS: CRANKCASE BREATHER HEATER AND INSULATION ADHESION ISSUE. THERE IS AN ISSUE WITH ADHESION OF HEATER AND INSULATION TO CRANKCASE BREATHER HOUSING, AND WITH ADHESION OF INSULATION TO INLET TUBE AND OUTLET TUBE. HEATER AND INSULATION ARE NOT ADHERING CORRECTLY AND ARE DISCONNECTING FROM THE BREATHER HOUSING, INLET TUBE, AND OUTLET TUBE. ENGINE MODELS ISM, ISME, QSM11, ISX, QSX15. *PE

The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

Components

Engine

Vehicles listed
CUMMINS CUMMINS
CUMMINS ISM
CUMMINS ISX

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