{"nhtsa_id":54015,"type":"service_bulletin","type_name":"Service bulletin","date_added":"1998-03-30","date":"1997-12-17","document_id":"97121797017","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING:ENGINE","mfr_system":null,"summary":"SUBJECT ON SPECIAL POLICY ADJUSTMENT FOR THE HEAD GASKETS. *YC","document":null,"url":"https://open.wenmarpro.com/bulletins/54015","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"TOYOTA","model":"4 RUNNER","year_from":1994,"year_to":1994,"match":"exact","vehicle_ids":["1994_toyota_4runner"]},{"make":"TOYOTA","model":"4RUNNER","year_from":1984,"year_to":1993,"match":"exact","vehicle_ids":["1984_toyota_4runner","1985_toyota_4runner","1986_toyota_4runner","1987_toyota_4runner","1988_toyota_4runner","1989_toyota_4runner","1990_toyota_4runner","1991_toyota_4runner","1992_toyota_4runner","1993_toyota_4runner"]},{"make":"TOYOTA","model":"TOYOTA","year_from":1988,"year_to":1994,"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":[]}