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Service bulletin ITS5909

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 id10057771
Published by NHTSA2015-06-25
Manufacturer's numberITS5909
Manufacturer's date2015-06-25
NHTSA componentENGINE AND ENGINE COOLING:COOLING SYSTEM:RADIATOR ASSEMBLY

NHTSA's summary

NEW FLYER: 2010 EPA OR NEWER ENGINES AND MINI-HYBRID COOLING SYSTEM BUSES WITH ISOLATED PIPE CLAMPS MAY EXPERIENCE RADIATOR CORROSION. *TA

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

Engine, Cooling system, Radiator

Vehicles listed
NEW FLYER XD352010 to 2014
NEW FLYER XD402010 to 2014
NEW FLYER XD602013 to 2015
NEW FLYER XDE352010 to 2011
NEW FLYER XDE352013 to 2014
NEW FLYER XDE402009 to 2014
NEW FLYER XDE602013 to 2015
NEW FLYER XE402013
NEW FLYER XN402011 to 2014
NEW FLYER XN602011 to 2014
NEW FLYER XT402014 to 2015
NEW FLYER XT602014

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