{"nhtsa_id":10190742,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2021-04-26","date":"2021-03-11","document_id":"C2053D","mfr_campaign":null,"replaces":null,"component":"EQUIPMENT","mfr_system":null,"summary":"This field action authorizes certified repair locations to upfit certain ISX12 CM2350 engines with an improved Selective Catalytic Reduction (SCR) Catalyst. For the MY2013 engines, a calibration update will be required. This is an update to a previously submitted communication.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10190742-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10190742-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10190742","components":[{"id":"equipment","name":"Equipment and accessories","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"CUMMINS","model":"ISX12","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":[]}