{"nhtsa_id":10083422,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2016-10-24","date":"2014-05-07","document_id":"FSB 252-029","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE; ENGINE","mfr_system":null,"summary":"SOME MACK MRU TRUCKS EQUIPPED WITH THE CUMMINS ISL-G ENGINE BUILT BEFORE SEPTEMBER 16, 2013 MAY EXPERIENCE A ISSUE WITH THE MUFFLER INLET PIPE FALLING OUT OF THE MUFFLER.","document":null,"url":"https://open.wenmarpro.com/bulletins/10083422","components":[{"id":"engine","name":"Engine","parent":null},{"id":"exhaust-emissions","name":"Exhaust and emissions","parent":null},{"id":"exhaust-pipe","name":"Exhaust manifold, pipes and muffler","parent":"exhaust-emissions"}],"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":[]}