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Service bulletin MI26-00

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 id11029487
Published by NHTSA2026-03-04
Manufacturer's numberMI26-00
Manufacturer's date2026-02-03
Campaign id or software versionMI26-00
NHTSA componentENGINE

NHTSA's summary

The gasket thickness was increased from 1.5 mm to 3 mm to prevent interference between the collar ends, which previously made it impossible to reach the specified tightening torque. Increasing the gasket thickness ensures sufficient clearance between the collar ends and thus guarantees optimal tightening.

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
PREVOST H3-402007 to 2013
PREVOST H3-412007 to 2019
PREVOST H3-412021 to 2023
PREVOST H3-452007 to 2026
PREVOST H3-45 VIP2007 to 2026
PREVOST X3-452007 to 2026
PREVOST X3-45 COMMUTER2010 to 2026
PREVOST X3-45 VIP2008 to 2026
PREVOST X3-45 VIP ENTERTAINER2008 to 2026
PREVOST XLII-452007 to 2015
PREVOST XLII-45 ENTERTAINER2007 to 2013

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