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Service bulletin SB83-161

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 id10214905
Published by NHTSA2022-07-02
Manufacturer's numberSB83-161
Manufacturer's date2022-06-01
NHTSA componentENGINE AND ENGINE COOLING

NHTSA's summary

Updated Freightliner Service Bulletin for Heater Hose Reduced Clearance May Cause Early Horn Failures

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

Vehicles listed
FREIGHTLINER BUSINESS CLASS M22018 to 2022

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