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Service bulletin 01906

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 id621160
Published by NHTSA2001-09-10
Manufacturer's number01906
Manufacturer's date2001-06-01
NHTSA componentSUSPENSION

NHTSA's summary

REAR SUSPENSION CROSSMEMBER IMPROVEMENT FOR 4300 AND 4400 MODELS BUILT BETWEEN OCTOBER 24, 2000 AND APRIL 16, 2001 WITH INTERNATIONAL RIDE OPTIMIZED SUSPENSION (IROS), EXCLUDING THE LOPRO MODELS. *TT

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

Suspension

Vehicles listed
INTERNATIONAL HARVESTER 4300
INTERNATIONAL HARVESTER 4400

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