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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: Engine are shown. Show all

Bulletins, newest first
110-132018-06-11. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. 110-13 SPN 5435-FMI 7 - GHG14
103-132018-06-11. Service bulletin. ENGINE AND ENGINE COOLING. 103-13 SPN 520328-FMI 7 - GHG14
148-132018-06-11. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. 148-13 GHG14 DD15 Asymmetrical Turbocharger Exhaust Manifold
119-132018-06-11. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. 119-13 Exhaust Gas Recirculation System - Cleaning
126-132018-06-11. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. 126-13 Description and Operation of the DD15 and DD16 Exhaust Gas Recirculaton Cooler
124-132018-06-11. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. 124-13 Installation of the DD Platform EGR Actuator Pull Rod
sbw09032018-06-11. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM. sbw0903 EPA10 Cummins ISX Air Intake Heat Shield Removal
15TS62018-06-11. Service bulletin. ENGINE AND ENGINE COOLING. 15TS6 Replacement of the High Pressure Fuel Pump Camshaft Oil Seal
0202-152018-06-11. Service bulletin. ENGINE AND ENGINE COOLING. 0202-15 EPA10 and GHG14 Diesel Oxidation Catalyst Face Cleaning
0203-152018-06-11. Service bulletin. ENGINE AND ENGINE COOLING. 0203-15 Oil Filter Stand Pipe
15TS14 GHG142018-06-11. Service bulletin. ENGINE AND ENGINE COOLING. 15TS14 GHG14 DD Engine Cylinder Liner Seal Replacement
708-152018-06-11. Service bulletin. ENGINE AND ENGINE COOLING. 708-15 High Pressure Fuel Pump Camshaft Oil Seal - Two-Filter System
711-152018-06-11. Service bulletin. FUEL SYSTEM, GASOLINE; ENGINE AND ENGINE COOLING. 711-15 High Pressure Fuel Pump Camshaft Oil Seal - Three-Filter System
702-152018-06-11. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. 702-15 DD15 and DD16 Delphi © Exhaust Gas Recirculation Valve Actuator
805-152018-06-11. Service bulletin. ENGINE AND ENGINE COOLING. 805-15 FMI 0: Selective Catalyst Reduction Outlet Temperature High
803-152018-06-11. Service bulletin. ENGINE AND ENGINE COOLING. 803-15 Removal of the Camshaft Housing
1110-172018-06-11. Service bulletin. ENGINE AND ENGINE COOLING. Exhaust and Exhaust Gas Recirculation
0141-172018-04-16. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:GAS RECIRCULATION VALVE (EGR VALVE). 0141-17 SPN 2659 (MCM) (EPA10)
0120-172018-04-16. Service bulletin. ENGINE. 0120-17 Diagnostic Test - Engine Oil Leaks - Oil Developer Method
0115-172018-04-16. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. 0115-17 SPN 3226 (ACM) (EPA10;GHG14)
0114-172018-04-16. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:GAS RECIRCULATION VALVE (EGR VALVE). 0114-17 SPN 2791 (MCM) (EPA07;EPA10)
0113-172018-04-16. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:DIESEL; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. 0113-17 SPN 3361 (ACM) (EPA10)
15TS42018-03-13. Service bulletin. ENGINE AND ENGINE COOLING. 15TS4_Rev2_ EPA07 DD15 Piston Kits
1205-152018-03-13. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CATALYTIC CONVERTOR. 1205-15 Selective Catalyst Reduction (SCR) Inlet Temperature Sensor
1201-152018-03-13. Service bulletin. EQUIPMENT; ENGINE. 1201-15 Crankshaft and Bearings

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.