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Service bulletin TSB140168-120114

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 id10089191
Published by NHTSA2017-01-19
Manufacturer's numberTSB140168-120114
Manufacturer's date2014-12-19
NHTSA componentFUEL SYSTEM, OTHER

NHTSA's summary

THIS TECHNICAL SERVICE BULLETIN ANNOUNCES A NEW SERVICE TOOL FUEL RETURN HOSE AND UPDATED SERVICE MANUAL PROCEDURE TO DECREASE THE OCCURRENCE OF FALSELY IDENTIFYING LEAKING FUEL PRESSURE RELIEF VALVES.

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

Fuel system

Vehicles listed
CUMMINS ISX11.9
CUMMINS ISX12
CUMMINS ISX15

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