Will this bolt directly into my current setup without draining the whole system?

Yes. Mount points align with OEM locations. You'll need to drain coolant before removal and refill once the new radiator is installed — standard radiator swap procedure.

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

Not required, but recommended if your current coolant is old or discolored. A flush prevents sediment buildup and extends radiator life. Check your owner's manual for coolant type and flush interval.

Are the hose connections standard sizes?

Connections match factory OEM ports — upper and lower inlets use the same diameter and thread pattern as your original radiator. No adapter fittings needed.