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Service bulletin sb2031

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 id10141674
Published by NHTSA2018-06-18
Manufacturer's numbersb2031
Manufacturer's date2018-02-26
NHTSA componentENGINE AND ENGINE COOLING:COOLING SYSTEM

NHTSA's summary

sb2031 Horton Fan Clutches with 32-Inch Fans

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, Cooling system

Vehicles listed
FREIGHTLINER BUSINESS CLASS M2 106V2005 to 2007
FREIGHTLINER CENTURY CLASS1997 to 2007
FREIGHTLINER CONVENTIONAL1990 to 2007
FREIGHTLINER FLB1991 to 1996
FREIGHTLINER FLB1998 to 2000
FREIGHTLINER FLB2001
FREIGHTLINER FLD2004 to 2007

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