Parts are OEM quality and they fit perfectly. I bought 4 keyless sensors for all 4 doors, and I havr just instaled them on Audi A4 B8. You will need diagnostic tool to erase errors from previous sensors. Best regards to this seller.
replaced all 4. worked for first few minutes, but strange: locking and unlocking function is inside of handle space (when you grab handle it unlock and lock at same time). Also do not lock when you swipe finger on external part of door handle. The car alarm went on when you unlock, and after few minutes stoped working all 4 and gave error "short to plus door sensors" all 4. So it does not work at the end. Disputed partly.
Fast shipping...good packaging i've change it on my car and it works very good
after 1 week works just fine