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Service bulletin TIB-45-048

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 id10052058
Published by NHTSA2013-05-09
Manufacturer's numberTIB-45-048
Manufacturer's date2013-01-16
NHTSA componentENGINE AND ENGINE COOLING:ENGINE:GASOLINE:BELTS AND ASSOCIATED PULLEYS

NHTSA's summary

KENWORTH: AN ERROR IN MANUFACTURING OF COOLANT PUMP PULLEY RESULTED IN A DECREASE IN PULLEY STRENGTH. MODELS MX-13 ENGINE. *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, Drive belts

Vehicles listed
KENWORTH KENWORTH

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