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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: Engine are shown. Show all

Bulletins, newest first
IK07001122021-07-02. Service bulletin. ENGINE AND ENGINE COOLING. Aftertreatment Clamp Corrosion; Single Can Aftertreatment Systems
IK12014572021-06-03. Service bulletin. ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING. Cummins B6.7 Grid Heater Relay
IK26001282021-04-02. Service bulletin. VEHICLE SPEED CONTROL; ENGINE AND ENGINE COOLING. A26, N13, and 2010 EPA MaxxForce 11 and 13 engine Auxiliary Programable Parameters
IK15000742020-12-02. Service bulletin. FUEL SYSTEM, DIESEL; EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL; FUEL SYSTEM, OTHER:FUEL FILTER; ENGINE AND ENGINE COOLING. Fuel Filters, Winter Additives, and Blending Fuels for Cummins® Engines
IK14000052020-09-02. Service bulletin. ENGINE; EQUIPMENT. Driveline Information Center and Troubleshooting Procedures
IK08005042020-09-02. Service bulletin. ELECTRICAL SYSTEM; ENGINE; POWER TRAIN. Repair Procedures for Vehicles Struck by Lightning
IK08002842020-08-04. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT; ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING. Ambient Air Temperature (AAT) Sensor Faults/Location/Diagnostics
IK19000222020-07-07. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION. A/C Refrigerant and Oil Capacities
IK12014422020-05-06. Service bulletin. ENGINE AND ENGINE COOLING. 5 gallon SSI DEF level sensor/ multifunction head unit retrofit; only 2014 and 2015 models year built with Navistar N9/N10 engines
IK08003642019-12-03. Service bulletin. ENGINE AND ENGINE COOLING. Stand Alone Real Time (SART) Module Diagnostics. Only 2010 and later models equipped with MaxxForce® 11/13/15 engines or N13 with feature 0508051
IK08002842019-11-05. Service bulletin. ENGINE AND ENGINE COOLING. Ambient Air Temperature (AAT) Sensor Faults/Location/Diagnostics
IK07000972019-11-05. Service bulletin. ENGINE AND ENGINE COOLING. NEW Ultrasonic DEF Head Unit; All SCR vehicles
IK12012992019-10-03. Service bulletin. ENGINE AND ENGINE COOLING. Oil Capacities; All Electronic International Engines 1994 - Present. Cummins ISB, ISM & ISX
IK07000792019-07-02. Service bulletin. ENGINE AND ENGINE COOLING. SCR Vehicles Setting DEF Quality Faults due to Crossed DEF Tank Coolant Lines or Inverted DEFTHV
IK08004842019-06-07. Service bulletin. ENGINE AND ENGINE COOLING; ELECTRICAL SYSTEM. Voltage gauge drops on cold engine start-up; Only models built with Cummins ISB, B6.7, ISL, or L9 engines
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
K12007162019-04-03. Service bulletin. ENGINE; EQUIPMENT:OTHER:LABELS. Engine Emission Label Replacement, Certificate of Conformance and Clean Idle Sticker Addition Procedure
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
IK08005032019-03-04. Service bulletin. ELECTRICAL SYSTEM:STARTER ASSEMBLY; ENGINE AND ENGINE COOLING. ISB Starting System Diagnostics; Only models built with cummins ISB engines
IK19000222018-10-15. Service bulletin. ENGINE. A/C Refrigerant and Oil Capacities
IK12012992018-10-15. Service bulletin. ENGINE. Engine Oil Capacities All Electronic International Engines 1994 - Present. Cummins ISB, ISM & ISX
IK12001012018-08-20. Service bulletin. ENGINE AND ENGINE COOLING. Cummins Programming Guide and Cummins 285 Fault Code; Only pre-2007 models built with Cummins ISM Engine
IK12010982018-07-16. Service bulletin. ENGINE AND ENGINE COOLING. LT EGR Core Removal and Insertion on MaxxForce 11, 13, and N13 engines
AFC139012018-05-29. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; ENGINE. ECM Recalibration to provide engine protection against an increase in engine RPM while vehicle is idling (only in a parked state or if vehicle is not moving); Only models equipped with MaxxForce 13 engine. Retired

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