Will this radiator work with my existing hoses and fittings?

Yes — the passenger-side outlet matches factory M2 106 plumbing. Your existing hoses and clamps will connect without adapters or modifications.

Do I need to flush my cooling system before installing this?

Flush and refill with fresh coolant before mounting the new radiator. Old fluid carries sediment that can clog a fresh core and reduce efficiency immediately.

What about the thermostat and water pump — do those need replacement at the same time?

Not required, but inspect them while you're in the cooling system. If your thermostat is original or your pump shows wear, replace both together to avoid a repeat teardown in a few months.