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

Yes. Drain the old coolant completely and flush the system with water to remove debris and sediment. This prevents blockages in the new core and ensures proper heat transfer. Refill with fresh coolant of the correct type for your vehicle.

Will the transmission cooler lines connect to this radiator without modification?

The transmission cooler passages are integrated into this radiator and designed to match OEM routing. Confirm your existing hose connections are in good condition; replace any cracked or brittle lines before installation.

What if my radiator is leaking at the plastic tank seam — can this one be repaired?

This is a sealed assembly. Leaks at tank seams cannot be repaired in the field. Replacement is the correct repair path, which is what this radiator provides. If you're experiencing coolant loss, inspect hose clamps and connections on the new unit before assuming a defect.