Service bulletins for the 2011 Western Star 4900
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.
552 on file from NHTSA, as of 2026-10-19.
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Only bulletins with component: Cooling system are shown. Show all
| sbw8329 HVAC Fre | 2018-12-10. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM. Service Bulletin: HVAC Fresh Air Intake Water Leak |
|---|---|
| sbw2018 | 2018-06-25. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM:RADIATOR ASSEMBLY. sbw2018 Western Star 4800 and 4900 Radiator Mounting |
| sbw0903 | 2018-06-11. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM. sbw0903 EPA10 Cummins ISX Air Intake Heat Shield Removal |
| sbw2023 | 2018-03-05. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM:RADIATOR ASSEMBLY. sbw2023 Modine Copper/Brass Bolted Downflow Radiator Rebuilding |
| sb2080 | 2017-11-17. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM:RADIATOR ASSEMBLY. sb2080 Australian CST M1400 Isolated Radiator Retrofit |
| 20-18 | 2017-10-15. Service bulletin. EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; ENGINE AND ENGINE COOLING:COOLING SYSTEM:RADIATOR ASSEMBLY. 20-18 - Western Star 4800 and 4900 Radiator Mounting, Update?EPA10 |
| SBW-2018 | 2013-01-16. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM:RADIATOR ASSEMBLY. 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 |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.