{"nhtsa_id":10171577,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2020-02-24","date":"2020-01-24","document_id":"C2128","mfr_campaign":null,"replaces":null,"component":"EQUIPMENT; EQUIPMENT ADAPTIVE/MOBILITY; ELECTRICAL SYSTEM","mfr_system":null,"summary":"Certain B6.7 CM2350 B121B engines were shipped without a fuel heater; a plug was installed in place of a fuel heater. This Campaign authorizes certified repair locations to install a fuel heater in place of the plug, change the fuel heater wiring harness polarity by switching wiring terminal locations within the fuel heater connector, and to replace or install a new fuse in the fuel heater circuit. This field action is a commercial (non-safety) action to properly re-enable the fuel heater functionality that was removed to correct a recall condition as described in the recall report for NHTSA recall 19E-020.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2020/MC-10171577-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2020/MC-10171577-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10171577","components":[{"id":"electrical","name":"Electrical system","parent":null},{"id":"equipment","name":"Equipment and accessories","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"CUMMINS","model":"B6.7","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":[]}