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Service bulletins for the 2018 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.

523 on file from NHTSA, as of 2026-10-19.

By type

By component

Only bulletins with component: Fuel system are shown. Show all

Bulletins, newest first
18SP7102018-02-12. Service bulletin. FUEL SYSTEM, OTHER:FUEL FILTER. 18SP710Rev 18SP710Rev ? EPA10 GHG14 Two-Filter Fuel
18SP7092018-02-12. Service bulletin. FUEL SYSTEM, OTHER. 18SP709Rev 18SP709Rev ? EPA10/GHG14 Two-Filter Fuel
18SP7012018-02-12. Service bulletin. FUEL SYSTEM, OTHER. 18SP701Rev2 18SP701Rev2? GHG14 Two-Filter Fuel System
16TS72018-02-12. Service bulletin. FUEL SYSTEM, DIESEL. 16TS7 Reman Diesel Particulate Filter Serial Number
0239-142018-01-05. Service bulletin. FUEL SYSTEM, GASOLINE. 0239-14 High Pressure Fuel Injector Lines - Three-Filter System
0238-142018-01-05. Service bulletin. FUEL SYSTEM, GASOLINE. 0238-14 Removal of the High Pressure Fuel Injector Lines - Two-Filter
0219-142018-01-05. Service bulletin. FUEL SYSTEM, OTHER. 0219-14 Metal in Fuel
0202-142018-01-05. Service bulletin. FUEL SYSTEM, OTHER. 0202-14 Symptom Diagnostics - Hard Start No Start - Two-Filter Fuel System
0215-142018-01-05. Service bulletin. FUEL SYSTEM, OTHER. 0215-14 Check for Rough Running or Stalling - Three-Filter Fuel System
813-142017-11-17. Service bulletin. FUEL SYSTEM, GASOLINE; FUEL SYSTEM, GASOLINE:FUEL INJECTION SYSTEM. 813-14 Installation of the One & Two-Piece Fuel Injector Wiring Harness - Two & Three-Filter System
18SP7032017-11-17. Service bulletin. FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP; FUEL SYSTEM, GASOLINE. 18SP703 18SP703 - GHG14 KM63 GEN2 Low Pressure Fuel Pump-Two-Filter Fuel System Ki

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