Default [Q] Nexus 5. Usb port broken. Flashable recovery on the phone?

I called the assistance(Google) and they told me that I can receive help only if I restore Nexus 5 in the stock state (water in the micro-usb port, then I can't use Nexus Tookit).

I've flashed the stock Rom but i don't know what to do with recovery. I've actually CWM, in this forum I only found the stock flashable recovery for Nexus 4, is there for Nexus 5?

Sorry for the bad english, i'm italian.