{"nhtsa_id":616457,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2001-02-27","date":"1998-05-01","document_id":"1586","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING:ENGINE","mfr_system":null,"summary":"TECHNICAL INFORMATION ON VEHICLES EXHIBITING CYLINDER HEAD OIL LEAK AT SEAL PLUG. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/616457","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"PORSCHE","model":"BOXSTER","year_from":1997,"year_to":1997,"match":"exact","vehicle_ids":["1997_porsche_boxster"]}],"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":[]}