The GENUINE part, as sold new by the dealer.
If your headlight alignment has been off recently these sensors may be what you need to get them back to where they belong.
Located at the left front control arm and body
Part # 3C0-412-521-B / 3C0412521 B / 3C0 412 521 B / 3C0412521B
⚠️CALIFORNIA WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov