Will this radiator handle sustained towing without overheating?

Yes — this is the towing-package radiator, which means it has a higher-capacity core than the base unit. It's engineered for the thermal demands of highway towing and heavy-duty cooling situations.

Do I need new hoses or adapter fittings?

No. This is an OEM-spec unit with the same connection ports as the factory radiator; your existing hoses and clamps bolt straight up without modification.

What about the cooling fan or thermostat — do those come with this?

This is the radiator core and tank only. The fan and thermostat are separate components; confirm those are in good condition before installing the new radiator.