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Service bulletin 21104

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 id10199913
Published by NHTSA2021-08-04
Manufacturer's number21104
Manufacturer's date2021-07-14
NHTSA componentENGINE AND ENGINE COOLING; STRUCTURE

NHTSA's summary

Certain International HX Series trucks with International A26 or Cummins X15 engines may have been built with an undersized exhaust slider isolator resulting in premature wear of the isolator and increased noise.

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

Body and frame, Engine

Vehicles listed
INTERNATIONAL HX2022

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