{"nhtsa_id":10170332,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2020-01-21","date":"2019-12-13","document_id":"C2112B","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING","mfr_system":null,"summary":"This field action authorizes certified repair locations to upfit certain ISC and ISL CM2250 engines with an improved Selective Catalytic Reduction (SCR) Catalyst. Any SCR Part Number found in the Affected Part Number Column should be replaced. This is an update to a previously submitted communication.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2019/MC-10170332-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2019/MC-10170332-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10170332","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"CUMMINS","model":"ISC","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":[]}