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Service bulletin EFN-E-06033

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 id10028860
Published by NHTSA2009-06-03
Manufacturer's numberEFN-E-06033
Manufacturer's date2009-01-05
NHTSA componentENGINE AND ENGINE COOLING:ENGINE

NHTSA's summary

CUMMINS: EXCESSIVE OIL BUILDUP/CARRYOVER INTO THE VEHICLE AIR SYSTEM FROM A KNORR BREMSE 460 TWIN CYLINDER AIR COMPRESSOR. MODEL AND MODEL YEARS UNKNOWN. *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

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