cooling upgrade part numbers

[Aftermath]

I'm building a 06 Navistar 6.5 t/d and want to install the Double Thermostat Housing, High Flow Water Pump, and the D/Max Fan and Clutch. Does anyone know the part numbers for new parts, or vehicle years that I could pull old parts from? I know there are a few suppliers that sell the kits for an arm and a leg, just trying to save a few bucks.

Thanks in advance

[trbankii]

IIRC, it was ’97 and up that had the upgrades.

[DmaxMaverick]

Yes, it was the 1997 model year. However, the updated system was being installed early in 1996, to include late-build (after January) 1996 models. Another difference to look for is the water pump and fan hub. Early models were bolt-on (like decades-old models), while later were threaded. I don't recall the year of that transition, but threaded fan hubs are still in use today. The two applications are not compatible.

[Robyn]

IIRC the 99 got the screw on fan hub.

[Aftermath]

I have heard of a few people using duramax fans with the 6.5, is this nessesary or will a 99 6.5 fan/water pump application work as good?

Thanks

[DmaxMaverick]

John Kennedy will have to verify, but I think the 99-2000 steel fan is as good or better than the Duramax composite fan. How many blades? The '99 6.5L water pump is 130 GPM. Earlier pumps were 87 GPM.