I suspect Aisin is fine. I believe they're the OEM supplier for Toyota/Lexus on that part. Aisin (or Denso) parts are not always identical to the genuine Toyota/Lexus, but generally close enough that you could say they're the same.oh I could cancel order if needed, I assume AISIN was OEM quality. Not the case?
For the AHC sensors I don't think I've heard of Aisin being a problem. To the contrary, I think every single person that mentioned they had an aftermarket (non-Aisin) AHC sensor had problems. I'm not using hyperbole when I say aftermarket AHC sensors are worth nothing.