{"nhtsa_id":11036013,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2026-08-07","date":"2026-07-28","document_id":"TSB260114","mfr_campaign":null,"replaces":null,"component":"ENGINE","mfr_system":null,"summary":"This Technical Service Bulletin describes the verification and resolution steps for the water manifold connection of certain X12 engines in MCI motor coach applications which may be out of specification, resulting in an external coolant leak.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11036013-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11036013-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11036013","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"CUMMINS","model":"X12","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":[]}