{"nhtsa_id":621164,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2001-09-10","date":"2001-06-01","document_id":"01908","mfr_campaign":null,"replaces":null,"component":"STRUCTURE:BODY","mfr_system":null,"summary":"SUBJECT REGARDING A REVISED STEP HEIGHT ON DRIVER AND PASSENGER SIDE FOR 4300 AND 4400 MODELS BUILT BEFORE APRIL 3, 2001 WITH 22.5 INCH WHEELS AND 65 GALLON FUEL TANKS. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/621164","components":[{"id":"structure-body","name":"Body and frame","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"INTERNATIONAL HARVESTER","model":"4300","year_from":null,"year_to":null,"match":null,"vehicle_ids":[]},{"make":"INTERNATIONAL HARVESTER","model":"4400","year_from":null,"year_to":null,"match":null,"vehicle_ids":[]}],"as_of":"2026-10-19","note":"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.","attribution":[]}