{"nhtsa_id":621532,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2001-09-25","date":"2001-05-01","document_id":"110301","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE","mfr_system":null,"summary":"ON SOME VEHICLES, THE INTAKE AIR FUNNEL TUBES LOCATED IN THE INTAKE MANIFOLD MAY NOT HAVE BEEN FRICTION WELDED PROPERLY DURING PRODUCTION AND MAY COME LOOSE CAUSING A RATTLING NOISE FROM THE INTAKE SYSTEM. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/621532","components":[{"id":"engine","name":"Engine","parent":null},{"id":"exhaust-emissions","name":"Exhaust and emissions","parent":null},{"id":"exhaust-pipe","name":"Exhaust manifold, pipes and muffler","parent":"exhaust-emissions"}],"codes":[],"topics":[],"vehicles":[{"make":"BMW","model":"E39","year_from":null,"year_to":null,"match":null,"vehicle_ids":[]},{"make":"BMW","model":"E52","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":[]}