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Service bulletin FT4537

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 id10159319
Published by NHTSA2019-04-30
Manufacturer's numberFT4537
Manufacturer's date2019-03-13
NHTSA componentENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE

NHTSA's summary

Exhaust Pipe Clamp Loose

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, Exhaust and emissions, Exhaust manifold, pipes and muffler

Vehicles listed
NOVA BUS LFS2016, 2017

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

Other bulletins for the same vehicles and component
BS4045E2017-08-03. Service bulletin. Heat from a drain on the exhaust may damage the rear left corner panel
BS3717ER12017-08-03. Service bulletin. Flexible bellows N79197 may have an exhaust leak near the rigid exhaust pipe