{"nhtsa_id":10085682,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2016-12-07","date":"2016-09-09","document_id":"ATC1771B","mfr_campaign":null,"replaces":null,"component":"ENGINE","mfr_system":null,"summary":"THIS ACCOUNT TEAM COVERAGE IS BEING ISSUED TO ADDRESS DEF DOSING VALVE GASKET FAILURES IN CERTAIN ISB6.7 CM2250 ENGINES IN SCHOOL BUS APPLICATIONS. THIS ATC PROVIDES AUTHORIZATION FOR CERTIFIED REPAIR LOCATIONS TO REPLACE THE CURRENT GASKET WITH AN IMPROVED GASKET. THIS IS A REVISION TO A PREVIOUUS COMMUNICATION.","document":null,"url":"https://open.wenmarpro.com/bulletins/10085682","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"CUMMINS","model":"ISB6.7","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":[]}