Will this fit my Highlander if it has the factory tow package?

No. This radiator is sized for non-tow models only. Tow-equipped Highlanders use a larger-capacity core. Verify your vehicle's cooling spec before purchasing to avoid fitment issues.

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

Yes. Replace all old coolant and flush the system to remove debris and contamination. Fresh coolant ensures the new radiator operates at full efficiency and extends its lifespan.

What mounting hardware comes with this radiator?

The radiator assembly ships without fasteners. You'll reuse the existing bolts and brackets from your vehicle. Check that your current hardware is in good condition before installation.