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Service bulletin ITS-4520

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 id10039304
Published by NHTSA2011-07-29
Manufacturer's numberITS-4520
Manufacturer's date2011-07-01
NHTSA componentPOWER TRAIN:DRIVELINE:DRIVESHAFT; STEERING:GEAR BOX (OTHER THAN RACK AND PINION)

NHTSA's summary

NEW FLYER: INFORMATION ON REPLACING GEARBOX BOLTS. *RM

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

Steering, Transmission and driveline, Driveshaft, Steering gear

Vehicles listed
NEW FLYER NEW FLYER

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