Still learning this vehicle platform, and couldn't find on lexus delearship websites. But i'm assuming the rubber mount is the engine or transmission bushing? Clueless as to what the cut wire is.. There is also a plug that has been connected with crimp wire connectors (4th pic) that also has been cut.. Any help would be appreciated. Thanks!

 

Those wires go to the low oil level sensor not to be confused with the oil pressure sensor. Mount with the split rubber is 12372-20040
https://www.japan-parts.eu/lexus/us/...&pa=1237220040

Have to buy OEM here or you'll be doing the job again shortly. Check the other engine mounts if one is bad others could be as well. Replacing a mount when others are bad means the replacement gets stressed and fails prematurely.