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Service bulletin S-1668

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 id10199659
Published by NHTSA2021-08-02
Manufacturer's numberS-1668
Manufacturer's date2021-07-05
NHTSA componentSERVICE BRAKES, AIR; PARKING BRAKE

NHTSA's summary

Installation Instructions BENDIX® AD-HFi™ SOLENOID GOVERNOR AND DELIVERY CHECK VALVE (DCV) REPLACEMENT KIT

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

Brakes, Parking brake

Vehicles listed
BENDIX BENDIX
BENDIX MC-12

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