Service bulletins for the 2012 Western Star 4700
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.
644 on file from NHTSA, as of 2026-10-19.
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By component
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Only bulletins with component: Engine are shown. Show all
| SF519A | 2016-07-07. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM:RADIATOR ASSEMBLY. SUMMARY TO BE PROVIDED ON A FUTURE DATE. |
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| WSB-20-20 | 2014-02-13. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM:RADIATOR ASSEMBLY. WESTERN STAR: INFORMATION PROVIDED REGARDING REPLACEMENT OF STANDARD RADIATOR MOUNT WITH AN ISOLATED MOUNT RADIATOR. *PE |
| SB-49-12 | 2012-06-14. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:DIESEL; FUEL SYSTEM, DIESEL. WESTERN STAR: AROUND THE DIESEL EXHAUST FLUID (DEF) AN EXCESSIVE AMOUNT OF CRYSTAL OR POWDER BUILT UP INDICATES A LEAK CAUSED BY EVAPORATION OF DEF EXPOSED TO AIR AND/OR DAMPNESS. *PE |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.