Beware fake AISIN engine coolant water pumps!
A shop or person with less experience than me, may buy one of these... for a normal price... and be none the wiser. The box it comes in is 99% like the original.
It's actually nicer packed than OEM, with foam and bubblewrap, with the gasket preinstalled. What raised my suspicion, was the fact that the Toyota logo WASN'T sanded off.
Do note: you can find these illegal counterfeits in Toyota dealership boxes too.
Opening it revealed the circuit board, of much lower quality, lacking the AISIN branding.
These WPT-190 pumps are made in Japan. My recommendation is to only buy them from sellers based in Japan. (or the Toyota dealer if you're OK with the $100+ markup) There are legit Japanese sellers on Amazon and eBay... There's also lots of Chinese knockoffs.
Even if you buy from a reputable place, do inspect it carefully, because a bad batch could end up in a legitimate seller's hands.