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Service bulletin TSB-120299

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 id10051773
Published by NHTSA2013-04-10
Manufacturer's numberTSB-120299
Manufacturer's date2012-12-21
NHTSA componentENGINE

NHTSA's summary

CUMMINS: ON SOME ENGINES (ISX12 CM22250/ISX15 CM2250), BELT IS SHREDDING. THE TIGHT SIDE IDLER BRACKET USE ON FAN CENTERS 457.2MM (18 INS) OR MORE IN ANY CHASSIS AND FAN CENTERS LESS THAN 457.2MM (18 INS) WILL EXPERIENCE THIS MALFUNCTION AND NOTICES ENGINE OVERHEATING. MODELS KENWORTH W900 AND PETERBILT 367HH, 388, 389. *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 ISX
CUMMINS ISX15

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