{"nhtsa_id":10110340,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2017-08-04","date":"2016-11-07","document_id":"TSB160066-110716","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM:WIRING","mfr_system":null,"summary":"This Technical Service Bulletin describes the verification and resolution of external oil leaks originating from a cracked rocker lever cover on certain engines caused by an oxygen sensor branch of the wire harness being pinched between the rocker lever cover and rocker housing during removal and installation of the rocker lever cover.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2016/MC-10110340-9999.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2016/MC-10110340-0001.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10110340","components":[{"id":"electrical","name":"Electrical system","parent":null},{"id":"engine","name":"Engine","parent":null},{"id":"wiring","name":"Wiring and fuses","parent":"electrical"}],"codes":[],"topics":[],"vehicles":[{"make":"CUMMINS","model":"ISX12 G","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":[]}