I just changed mine a couple weeks ago due to a slow leak on one of the big side tubes on the condenser that was getting progressively worse. I bought mine online from here:
https://stores.revolutionparts.com/toyotaparts.bochtoyotasouth.com/oem-parts/toyota-condenser-assembly-8846060903/?c=aT04NDE1MDgwNSZyPWxheWVyXzE=
It was a Denso part (88460-60903 Condenser Assembly) and came with the Dryer Element already installed inside of the tubular housing attached to the side of the condenser assembly. You will need the two O-rings (90069-08011 Ring, O / 90069-08007 Ring, O) for the lines that attach to it. I sourced mine at my local Toyota Dealer for a couple of dollars.
I also bought my condenser fan (88590-60030 Blower Assembly) from this same website and later on bought
@LandCruiserPhil mounts and wiring harness to complete the install. It is a high quality kit and super easy to install. He now even offers a plug and play kit that includes an aftermarket fan for a little more than the OEM fan alone.
As for the installation, put your AHC in high and remove your front skid plate. Then unbolt the lines and mounts on the old one. Drop it straight down and out from underneath the front of truck. Then reinstall in the reverse order and you are ready to recharge the system.
I got a local mechanic to pull vacuum and check for leaks. He put a few ounces of oil and some dye in it and recharged the system for a nominal fee. My A/C now blows super cold even while idling in triple digit degree heat for extended period. I'm very happy with the results.