{"nhtsa_id":10002454,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2003-09-02","date":"2002-12-06","document_id":"1001","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING:ENGINE","mfr_system":null,"summary":"OPTION X51 - INCREASED ENGINE PERFORMANCE FOR VEHICLES WITH MANUAL TRANSMISSION.","document":null,"url":"https://open.wenmarpro.com/bulletins/10002454","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"PORSCHE","model":"911 CARRERA","year_from":2002,"year_to":2002,"match":"base","vehicle_ids":["2002_porsche_911"]}],"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":[]}