Do I need new coolant hoses to install this?

Depends on the condition of your existing hoses. If they're cracked, brittle, or haven't been replaced in years, now's the time. The tank itself connects to stock hose diameters, but damaged lines will leak regardless of a new tank.

Can I reuse the cap and overflow tube from my old tank?

Test-fit first. OEM caps are sometimes model-year specific. If the cap threads match and the tube diameter fits, you're good to go. If there's any gap or misalignment, source the matching cap and tube together to avoid overflow or air leaks.

What preparation is needed before installation?

Drain the coolant from your system first—do not attempt this with a full, hot system. Unbolt the old tank, disconnect the hoses, and set aside. Clean the mounting area of any debris or corrosion. Install the new tank, reconnect hoses with fresh clamps if the old ones show wear, and refill with coolant. Bleed air from the system per your service manual.