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Service bulletin IS-21901

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 id10201826
Published by NHTSA2021-10-04
Manufacturer's numberIS-21901
Manufacturer's date2021-09-14
NHTSA componentEQUIPMENT

NHTSA's summary

X3 SERIES ENVIROCARE - IONS AIR SANITIZER

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

Equipment and accessories

Vehicles listed
PREVOST X3-452009 to 2022
PREVOST X3-45 COACH2011 to 2016

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