{"nhtsa_id":51145,"type":"service_bulletin","type_name":"Service bulletin","date_added":"1997-06-27","date":"1997-01-02","document_id":"BC1009497020","mfr_campaign":null,"replaces":null,"component":"POWER TRAIN:CLUTCH ASSEMBLY","mfr_system":null,"summary":"WHEN REPLACING SERVICE P/N F6XZ-7A360-AA (FORWARD CLUTCH CYLINDER) IN A 4F20E TRANSMISSION, YOU MUST ALSO INSTALL THE F6XZ-7H198-AA (RESIDUAL CHECK BALL) INTO THE FORWARD CLUTCH CYLINDER. *JD","document":null,"url":"https://open.wenmarpro.com/bulletins/51145","components":[{"id":"powertrain","name":"Transmission and driveline","parent":null},{"id":"clutch","name":"Clutch","parent":"powertrain"}],"codes":[],"topics":[],"vehicles":[{"make":"FORD","model":"FORD","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":[]}