How do I know if I need the AT or MT version?

Check your vehicle's transmission type — automatic or manual. The cooling circuits differ between them, so matching your transmission ensures proper coolant flow and thermostat function. If unsure, verify in your owner's manual or service records before ordering.

What do I need to do before installing this radiator?

Drain the existing coolant completely and flush the system if the old radiator showed signs of rust or sediment. Inspect hoses and clamps for wear — if they're original to the vehicle, replace them while you have the radiator out. Top off with fresh coolant once installed and burp air from the system per your service manual.

Does this radiator come with a fan, thermostat, or hoses?

The assembly is the core only. You'll reuse your existing electric fan, thermostat housing, and hoses. If any of those components show damage or age, source them separately before you start the swap.