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Service bulletin EFN-08077

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 id10028391
Published by NHTSA2009-03-28
Manufacturer's numberEFN-08077
Manufacturer's date2008-09-06
NHTSA componentENGINE AND ENGINE COOLING:COOLING SYSTEM; ENGINE AND ENGINE COOLING

NHTSA's summary

CUMMINS: COOLANT LEAK POTENTIAL FROM THERMOSTAT HOUSING SUPPORTS. BUILT BETWEEN 9/04/08 AND 9/24/08. 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, Cooling system

Vehicles listed
CUMMINS CUMMINS

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