Will this radiator work with the factory cooling system without modification?

Yes. This radiator uses the original mounting points and connections—it's a direct replacement with no hose changes or bracket work needed.

Do I need a new radiator cap or hose set when I install this?

The radiator itself doesn't include a cap or hoses. Reuse your existing cap and hoses if they're in good condition; replace them only if they show age or damage.

What coolant should I use when I refill?

Use the coolant type specified in your owner's manual—Toyota's pink or red long-life coolant is standard for this model. Don't mix types; flush the system if you're unsure what was last used.