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Service bulletin SF-454AB

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10043184
Published by NHTSA2012-02-29
Manufacturer's numberSF-454AB
Manufacturer's date2011-12-01
NHTSA componentENGINE AND ENGINE COOLING:COOLING SYSTEM; ENGINE AND ENGINE COOLING

NHTSA's summary

DAIMLER TRUCK: CERTAIN TRUCKS ARE BEING MODIFIED DUE TO AIR CLEANER INLET CAPS INGESTING UNDER HOOD AIR CAUSING THE TURBO INLET TEMPERATURES TO BE TOO HIGH. *PE

The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

Components

Engine, Cooling system

Vehicles listed
WESTERN STAR 49002009, 2010

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Other bulletins for the same vehicles and component
sbw8329 HVAC Fre2018-12-10. Service bulletin. Service Bulletin: HVAC Fresh Air Intake Water Leak
sbw20182018-06-25. Service bulletin. sbw2018 Western Star 4800 and 4900 Radiator Mounting
sbw09032018-06-11. Service bulletin. sbw0903 EPA10 Cummins ISX Air Intake Heat Shield Removal
sbw20232018-03-05. Service bulletin. sbw2023 Modine Copper/Brass Bolted Downflow Radiator Rebuilding
sb20802017-11-17. Service bulletin. sb2080 Australian CST M1400 Isolated Radiator Retrofit
SBW-20182013-01-16. Service bulletin. 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