{"nhtsa_id":601191,"type":"service_bulletin","type_name":"Service bulletin","date_added":"1998-07-07","date":"1998-03-01","document_id":"980301004-98","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING:ENGINE","mfr_system":null,"summary":"INFORMATION ON CYLINDER HEAD BOLT O-RINGS, ALL MODELS WITH VE D 12 ENGINES. . *YC","document":null,"url":"https://open.wenmarpro.com/bulletins/601191","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"VOLVO","model":"VOLVO TRUCK","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":[]}