Do I need any adapter hoses or fittings to make this work with my stock setup?

Connection points are factory-spec, so your original hose routing and fittings work as-is. Confirm hose condition before install — aged rubber can fail when you switch to fresh cooling capacity.

What's the return process if the radiator doesn't fit or leaks?

This radiator ships tested and ready to install. If you encounter a defect within the return window, contact ModSupply customer service with photos and a description of the issue — they'll walk you through next steps.

Should I flush my cooling system before dropping this in?

Yes. Old coolant and debris will clog a fresh radiator fast. Flush the block, hoses, and water pump passages with distilled water, then refill with quality coolant matched to your original spec.