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

Yes. Drain the old coolant completely, flush the block and hoses with distilled water to remove sediment, then refill with fresh coolant. Old fluid can degrade the new radiator's internal passages.

Will this radiator work if I've modified my cooling system or added a larger engine?

This radiator is sized for the stock 3.0L engine. Any engine swap or significant cooling modifications require validation of thermal load before installation—oversizing or undersizing creates reliability risk.

What mounting hardware comes with this?

The radiator ships as an assembly. Verify your existing mounting brackets and fasteners are in good condition before install—reuse them if serviceable, or source replacements from your parts supplier if damaged.