Do I need a new thermostat or hoses when I swap this in?

Not necessarily — if your current hoses are intact and your thermostat is functioning, reuse them. Inspect for cracks or soft spots before reinstalling. If either looks questionable after 50k+ miles, replace it while you're in there.

What about coolant — do I need to flush the system or use specific fluid?

Flush the system to remove old coolant and debris before installing. Use OEM-spec coolant that matches your vehicle's original fill — consult your service manual for the exact type.

Does this come with a fan clutch or electric fan?

Radiator assembly only — your existing fan setup transfers directly. If your current fan is failing or noisy, address that separately after confirming the radiator itself is the cooling bottleneck.