{"nhtsa_id":10141900,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2018-06-18","date":"2014-05-21","document_id":"521-14","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING:EXHAUST SYSTEM; FUEL SYSTEM, DIESEL","mfr_system":null,"summary":"521-14 FMI 0: Under Pressurized Diesel Exhaust Fluid (DEF) System","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2014/MC-10141900-9999.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2014/MC-10141900-0001.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10141900","components":[{"id":"engine","name":"Engine","parent":null},{"id":"exhaust-emissions","name":"Exhaust and emissions","parent":null},{"id":"fuel-system","name":"Fuel system","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"FCCC","model":"FCCC","year_from":null,"year_to":null,"match":null,"vehicle_ids":[]},{"make":"FREIGHTLINER","model":"FREIGHTLINER","year_from":null,"year_to":null,"match":"exact","vehicle_ids":[]},{"make":"WESTERN STAR","model":"WESTERN STAR","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":[]}