When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Check with Lexus and see if they have it. If not the next best thing would be to try and find someone parting their car out or if you can find one at a junkyard.
That little piece allows you to manual put your car into neutral or any other gear if you can't turn your car on and put it into gear. Basically you stick your key in the hole with your foot on the brake, and it will allow you to manual change the shifter to whatever gear you want.