Will this work if I've upgraded my cooling system with larger fans or a custom shroud?

This is a stock core sized for factory cooling system geometry. If you've modified fan setup or air ducting, test-fit before installation to confirm clearance and flow routing.

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

Yes. Remove old coolant completely and flush the block and hoses. New radiator + old contaminated coolant is a recipe for blockage. Use a system flush kit or run distilled water through until it runs clear.

What if this radiator leaks within the first month — what's the return process?

Contact ModSupply customer service with photos of the leak and proof of purchase. Defect claims are handled case-by-case; document the issue before installing other components that might be affected by coolant.