Thank you!Lots of information in this thread:
OEM AT Cooler Install - ClubLexus - Lexus Forum Discussion
GX - 2nd Gen (2010-2023) - OEM AT Cooler Install - EDIT: This is more than likely the same setup going into the 2020+ GX 460 with off-road package. This has also long been available since 2010 in Canadian high trim models. As of 2019 this cooler is part of the Executive Package in Canada....www.clublexus.com