{"nhtsa_id":10162962,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2019-07-22","date":"2019-06-10","document_id":"TSB1900890610201","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING","mfr_system":null,"summary":"This Technical Service Bulletin describes the new coolant thermostat housing seal implemented for heavy duty platforms. The material of the coolant thermostat seal was changed from brass to stainless steel. A more robust stainless steel design prevents premature malfunction that may be experienced when utilizing the existing brass seal.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2019/MC-10162962-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2019/MC-10162962-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10162962","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"CUMMINS","model":"ISM","year_from":null,"year_to":null,"match":null,"vehicle_ids":[]},{"make":"CUMMINS","model":"ISX15","year_from":null,"year_to":null,"match":null,"vehicle_ids":[]},{"make":"CUMMINS","model":"X15","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":[]}