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Service bulletin ATC1950

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 id10123198
Published by NHTSA2017-11-14
Manufacturer's numberATC1950
Manufacturer's date2017-10-27
NHTSA componentENGINE AND ENGINE COOLING:EXHAUST SYSTEM

NHTSA's summary

This Account Team Coverage is being issued to update certain ISX15 CM2350 valve rocker assemblies. This field action provides authorization for certified repair locations to replace the intake and exhaust valve rocker assemblies on eligible engines with assemblies that included improved oil delivery to the roller and pin interface.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Engine, Exhaust and emissions

Vehicles listed
CUMMINS ISX15

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