{"nhtsa_id":10053505,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2013-11-05","date":"2013-08-02","document_id":"WC-C1387","mfr_campaign":null,"replaces":null,"component":"ENGINE","mfr_system":null,"summary":"CUMMINS: ISL9 AFTERTREATMENT SYSTEMS THAT LEAD TO FAILED DEF DOSING VALVES IN TRANSIT APPLICATIONS, IS BY REROUTING OF COOLANT LINES TO DOSING VALVE HAS BEEN DETERMINED TO REDUCE FC 3569. MODEL ISL, ISLE3, QSL9. NO MODEL YEARS LISTED. *PE","document":null,"url":"https://open.wenmarpro.com/bulletins/10053505","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"CUMMINS","model":"CUMMINS","year_from":null,"year_to":null,"match":null,"vehicle_ids":[]},{"make":"CUMMINS","model":"ISL","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":[]}