{"nhtsa_id":602673,"type":"service_bulletin","type_name":"Service bulletin","date_added":"1999-01-06","date":"1998-11-01","document_id":"98028A","mfr_campaign":null,"replaces":"98-028","component":"ENGINE AND ENGINE COOLING:EXHAUST SYSTEM","mfr_system":null,"summary":"EXHAUST SYSTEM WARRANTY EXTENSION INFORMATION. *YC","document":null,"url":"https://open.wenmarpro.com/bulletins/602673","components":[{"id":"engine","name":"Engine","parent":null},{"id":"exhaust-emissions","name":"Exhaust and emissions","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"INFINITI","model":"QX4","year_from":1997,"year_to":1998,"match":"exact","vehicle_ids":["1997_infiniti_qx4","1998_infiniti_qx4"]}],"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":[]}