Will this fit my automatic Esteem without modification?

Yes. This radiator is designed for both automatic and manual models — it mounts at the factory points with no drilling or bracket changes needed.

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

Flushing the cooling system is strongly recommended before any radiator swap to remove debris and old coolant that could restrict flow or cause corrosion in the new core.

What coolant should I use after installation?

Refer to your vehicle's service manual for the specified coolant type and capacity — using the correct fluid prevents compatibility issues and ensures proper cooling performance.