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Service bulletin 0420

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 id10006923
Published by NHTSA2004-05-19
Manufacturer's number0420
Manufacturer's date2004-05-21
Replaces0420R
NHTSA componentENGINE AND ENGINE COOLING

NHTSA's summary

THERE ARE SOME MY2004 INTERNATIONAL CE BUS, 3200, 3300, 4300, AND 4400 MODEL VEHICLES EQUIPPED WITH A VISCOUS FAN OR AN ON/OFF FAN CLUTCH AND NOT EQUIPPED WITH A RING SHROUD ON WHICH THE FAN MAY CONTACT THE LEFT RADIATOR HOSE. *TT

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

Vehicles listed
INTERNATIONAL 43002004

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
IK26000472026-02-05. Service bulletin. Engine replacements for all International engines will need to follow this procedure.
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IK26000692023-10-05. Service bulletin. How to request a horsepower quote; all International and Cummins engines
IK08004072023-04-07. Service bulletin. Starter diagnostics and warranty claim procedure for all engines and all chassis EXCLUDING vehicles equipped with PSI engines or Cummins ISB engine with Allison transmissions
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IK08000742021-12-07. Service bulletin. Dual Drive Cab Throttle Position Harness for APS/IVS throttle pedals; only models with both left hand and right hand drive.
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IK26001852020-09-02. Service bulletin. Codes 141, 142, and 621 in a 2-box ECM/IDM; only models with 2-box ECM/IDM from 2003-2007