{"nhtsa_id":10009549,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2004-10-06","date":"2004-11-10","document_id":"581","mfr_campaign":null,"replaces":"581","component":"ENGINE AND ENGINE COOLING:EXHAUST SYSTEM","mfr_system":null,"summary":"INCORRECT EXHAUST MANIFOLD STUD MATERIAL AND HIGH-PRESSURE INJECTION LINE REPLACEMENT ON MACK ASET AC ENGINES LESS THAN 460 HORSEPOWER. MACK. *TT THIS BULLETIN SUPERSEDES PI581 DATED 8/2/04. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/10009549","components":[{"id":"engine","name":"Engine","parent":null},{"id":"exhaust-emissions","name":"Exhaust and emissions","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"UNKNOWN","model":"UNKNOWN","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":[]}