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Service bulletin T1212

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 id10085582
Published by NHTSA2016-12-06
Manufacturer's numberT1212
Manufacturer's date2012-11-02
NHTSA componentENGINE

NHTSA's summary

THIS TEMPORARY REPAIR PRACTICE ALLOWS THE FIELD TO CUT/SHIM FIVE ADDITIONAL CYLINDERS AND REPALCE THE LINERS ON SPECIFIC ENGINES IN THE EVENT THAT ONE OF THESE ENGINES FAILS FOR A COMBUSTION SEAL LEAKK RESULTING FROM LINER PROTRUSION THAT IS OUT OF SPECIFICATION AND WEAR/FRETTING ON THE COUNTERBORE LEDGES.

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 ISX15

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