WenmarOpen by Wenmar Pro

Service bulletin 4237

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 id10022007
Published by NHTSA2007-06-28
Manufacturer's number4237
Manufacturer's date2007-05-25
NHTSA componentENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN

NHTSA's summary

HORTON DRIVEMASTER FAN HUB BEARING UPGRADE. KENWORTH. *KB

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 fan, Cooling system

Vehicles listed
UNKNOWN UNKNOWN

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