Do I need to drain and flush the cooling system before installation?

Yes. Drain your existing coolant completely before removing the old radiator. Once the new radiator is in place, refill with fresh coolant and bleed the system according to your service manual to remove air pockets.

Will this work if my current radiator is leaking?

This is a direct replacement for your original radiator. If your current one is failing, this unit restores full cooling capacity. Make sure your thermostat and water pump are in good condition to avoid repeat issues.

What fasteners and hoses do I need to supply?

The radiator assembly comes as-is. You'll reuse your existing upper and lower hoses, clamps, and mounting bolts from your old radiator—they bolt directly to the same points on this unit.