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Service bulletin SB-3043

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 id10034486
Published by NHTSA2010-11-19
Manufacturer's numberSB-3043
Manufacturer's date2010-09-28
NHTSA componentSERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DIFFERENTIAL PROPORTIONAL VALVE; SERVICE BRAKES, AIR:SUPPLY:CHECK VALVE; SERVICE BRAKES, AIR:SUPPLY:QUICK RELEASE VALVE

NHTSA's summary

MCI: TAG UNLOAD VALVE ASSEMBLY. EFFECTIVE WITH UNIT NUMBER 65614, MCI HAS MADE DESIGN CHANGES TO THE TAG UNLOAD VALVE ASSEMBLY INSTALLATION ON SOME MODEL COACHES. THE LONGER LIFE VALVES WILL IMPROVE THE DURABILITY OF THE TAG UNLOAD VALVE ASSEMBLY. MODELS E4500/J4500 SERIES. NO MODEL YEARS LISTED. *PE

The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

Components

Brakes

Vehicles listed
MCI E SERIES
MCI E SERIES1998
MCI E SERIES2001 to 2008
MCI E45001999 to 2011
MCI E4500C2002 to 2006
MCI J SERIES
MCI J45002000 to 2011
MCI J4500C2006

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