{"nhtsa_id":10170326,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2020-01-21","date":"2019-12-10","document_id":"C2034B","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING","mfr_system":null,"summary":"This field action authorizes certified repair locations to upfit certain ISX15 CM2250 engines rated at 455hp-500hp with an improved SCR Catalyst. This is a revision to a previously submitted communication.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2019/MC-10170326-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2019/MC-10170326-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10170326","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"CUMMINS","model":"ISX15","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":[]}