{"nhtsa_id":10081442,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2016-10-04","date":"2015-04-14","document_id":"FSB 383-002","mfr_campaign":null,"replaces":null,"component":"ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL; EQUIPMENT:ELECTRICAL","mfr_system":null,"summary":"SPEEDOMETER, REPLACEMENT. TO ENSURE THE PROPER INSTALLATION OF NEW SPEEDOMETER (PART NUMBER 85144379) WHEN REPLACING OLD SPEEDOMETER (PART NUMBER 25165963), YOU MUST FOLLOW THE INSTALLATION, CALIBRATION, AND VALIDATION PROCEDURES OUTLINED IN THIS FIELD SERVICE BULLETIN.","document":null,"url":"https://open.wenmarpro.com/bulletins/10081442","components":[{"id":"electrical","name":"Electrical system","parent":null},{"id":"equipment","name":"Equipment and accessories","parent":null},{"id":"instrument-cluster","name":"Instrument cluster","parent":"electrical"}],"codes":[],"topics":[],"vehicles":[{"make":"MACK","model":"MACK","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":[]}