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Service bulletin ATC2078B

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 id10173909
Published by NHTSA2020-04-20
Manufacturer's numberATC2078B
Manufacturer's date2020-03-10
NHTSA componentENGINE AND ENGINE COOLING

NHTSA's summary

This Account Team Coverage is being issued to address suspect Valve Rocker Assemblies on certain ISX15 CM2350 X10 engines. The field action provides authorization for certified repair locations to replace the Intake and Exhaust Valve Rocker assemblies on eligible engines with assemblies that include improved oil delivery to the roller and pin interface.This is an update to a previously submitted communication.

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

Vehicles listed
CUMMINS ISX15

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