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Service bulletins for the 2014 International Workstar

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.

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

By type

By component

Only bulletins with component: Exhaust and emissions are shown. Show all

Bulletins, newest first
IK07000972019-06-07. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM; ENGINE AND ENGINE COOLING. NEW Ultrasonic DEF Head Unit available; Only models equipped with SCR Aftertreatment.
IK07000972019-05-03. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM; ENGINE AND ENGINE COOLING. NEW Ultrasonic DEF Head Unit; Only vehicles Equipped with SCR
IK07000972019-04-03. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM; ENGINE AND ENGINE COOLING. NEW Ultrasonic DEF Head Unit; only models equipped with SCR Aftertreatment
REC135032018-04-02. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL; ENGINE AND ENGINE COOLING. Certain 2010, 2011, and 2012 model year MaxxForce® 11 engines do not meet EPA emissions requirements.
AFC139182018-04-02. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. Electronic Control Module (ECM) and Aftertreatment Control Module (ACM) Recalibration and Aftertreatment Fuel Line 1 Replacement
IK12009402018-04-02. Service bulletin. FUEL SYSTEM, GASOLINE; ENGINE AND ENGINE COOLING:EXHAUST SYSTEM; FUEL SYSTEM, DIESEL. SCR Fluid Filter Replacement; only with Cummins ISX or Navistar N13 Diesel Exhaust Fluid System
IK07000972018-04-02. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM; ENGINE AND ENGINE COOLING:ENGINE:DIESEL. NEW Ultrasonic DEF Tank Sending Unit; only models with SCR Aftertreatment system.
IK07000792018-04-02. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. SCR Vehicles Setting 3363-16 (FC1713) due to Crossed DEF Tank Coolant Lines or Inverted DEFTHV
IK07000322017-09-08. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. DPF Snap Accel Test - Quick Test to All vehicles with DPFs
REC155032017-09-08. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. Emergency vehicle calibration will reduce the engine exhaust soot levels that enter the aftertreatment system and prevent the possibility of engine derate or eventual shutdown due to lack of performing exhaust system regeneration as a result of extensive idling typical of emergency vehicles.
IK12009402017-08-16. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM; FUEL SYSTEM, GASOLINE. SCR Fluid Filter Replacement; only with Cummins ISX or Navistar N13 Diesel Exhaust Fluid System
IK-12012532016-09-12. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE. IK1201253 - EXHAUST MANIFOLD SERVICE PROCEDURES
VER-145122015-01-31. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL. NAVISTAR: IN CERTAIN TRUCKS, AN EMISSIONS RECALL IS REQUIRED TO RECALIBRATE ENGINE ECM SOFTWARE TO REDUCE INCORRECT FAULT CODES AND TO PREVENT OVERLOAD OF DIESEL PARTICULATE FILTER (DPF). *PE

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