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Service bulletin IB23-J-001B

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 id10244940
Published by NHTSA2023-11-06
Manufacturer's numberIB23-J-001B
Manufacturer's date2023-10-04
NHTSA componentENGINE AND ENGINE COOLING

NHTSA's summary

In the past, replacement 6.0L gasoline and RPO KL8/LC8 Alternative Fuel Capable engines came as a certain configuration. These engines are now provided as different long block assembly configurations. The new configurations do not include many of the components that were provided with or pre-installed on the complete engine assemblies previously sold as replacement parts.

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
ISUZU N-SERIES2012 to 2022

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