Fan clutch options for 4300 International?

i understand your want but do not know if that is available for your truck. If it is it will be expensive. What about adding some electric fans?

 

I have never seen that done but if you did you would need a group of high speed fans like one on my wifes F150, it screams.
Have changed several trucks over from viscous to air clutches. They were engines used in many applications and parts were available from the bone yard. Had to have the whole engine bracket to go along with the clutch. Never saw any other clutch on the engine you are talking about. If anyone has one maybe they can send you a serial number.
Those Kysor air clutches are not very thick or heavy if you can machine things to bolt one up.

 

Yeah, I understand what you are asking. The 2004 International 4300 with the DT466 comes with a belt-driven fan that always spins when the engine is running. If you want full control to turn it off or run it 100 % for PTO, you would need a pneumatic clutch fan or an electric fan conversion.
Both options work, but you need to make sure the fan is sized properly to handle the cooling requirements. If it is too small or not fast enough, the engine could overheat, especially on dusty roads or in quarries.

Done correctly, it gives you the control you want without compromising engine safety.