{"nhtsa_id":10203655,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2021-12-01","date":"2021-11-19","document_id":"TSB 21-2408","mfr_campaign":null,"replaces":null,"component":"EQUIPMENT ADAPTIVE/MOBILITY; ENGINE AND ENGINE COOLING; EQUIPMENT","mfr_system":null,"summary":"Some 2015-2019 Transit vehicles equipped with a 3.7L engine and block heater may exhibit a repeat coolant leak from a deteriorated O-ring and/or intake manifold thermostat housing. This may be due to the block heater in the thermostat housing. To correct the condition, install a block heater service kit in the engine block.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10203655-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10203655-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10203655","components":[{"id":"engine","name":"Engine","parent":null},{"id":"equipment","name":"Equipment and accessories","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"FORD","model":"TRANSIT","year_from":2015,"year_to":2019,"match":"exact","vehicle_ids":["2015_ford_transit","2016_ford_transit","2017_ford_transit","2018_ford_transit","2019_ford_transit"]}],"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":[]}