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Service bulletin TSB230089

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 id10238658
Published by NHTSA2023-07-05
Manufacturer's numberTSB230089
Manufacturer's date2023-06-24
NHTSA componentENGINE AND ENGINE COOLING

NHTSA's summary

This Technical Service Bulletin describes the verification and resolution of issue of replacing the old part nos. with new New Main Bearing, Thrust Bearing, and Connecting Rod Bearing Part Numbers that are more robust.

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 ISG12
CUMMINS X12

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