{"nhtsa_id":10049519,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2013-01-16","date":"2012-12-01","document_id":"SBW-2018","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING:COOLING SYSTEM:RADIATOR ASSEMBLY","mfr_system":null,"summary":"WESTERN STAR: RADIATOR MOUNTING. SOME EPA COMPLIANT WESTERN STAR 4900 VEHICLES EQUIPPED WITH 1700 SQ IN ALUMINUM RADIATORS, MANUFACTURED MARCH 2010 AND LATER, WITH SPECIFIC COMBINATION OF ENGINE OPERATING PARAMETERS, MAY HAVE RADIATOR FAILURES RESULTING IN A COOLANT LEAK DUE TO A CRACK IN THE COOLANT TUBE. LEAKS IN ANY OTHER PLACE OTHER THAN THE COOLANT TUBES DO NOT APPLY FOR THIS BULLETIN. *JS","document":null,"url":"https://open.wenmarpro.com/bulletins/10049519","components":[{"id":"engine","name":"Engine","parent":null},{"id":"cooling-system","name":"Cooling system","parent":"engine"},{"id":"radiator","name":"Radiator","parent":"engine"}],"codes":[],"topics":[],"vehicles":[{"make":"WESTERN STAR","model":"4900","year_from":2010,"year_to":2013,"match":"exact","vehicle_ids":["2010_western-star_4900","2011_western-star_4900","2012_western-star_4900","2013_western-star_4900"]}],"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":[]}