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Service bulletin SB 459

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 id10129260
Published by NHTSA2018-02-21
Manufacturer's numberSB 459
Manufacturer's date2018-01-26
NHTSA componentENGINE

NHTSA's summary

This Service Bulletin informs affected customers that the potential may exist for heat damage to occur to the rear bumper asembly on coaches equipped with an ISX G engine on model year 2015-2018 MCI D Series model coaches, and that MCI has a retrofit available at no cost to the customers.

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
MCI D40002015 to 2017
MCI D40052015 to 2018
MCI D45002015 to 2018
MCI D45052015 to 2018

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