Needs 3M automotive grade two-sided tape all around the edges, that's how it comes when new. Only uses two screws around the outer edges (you will see the holes in the spoiler) that will fit were original holes are under at the front of the car. Recommend using windscreen type silicone on most other contact points. The outer edge tape is VERY IMPORTANT or you could get edge gaps. You only get one chance at sitting it correctly, so I recommend you first mark the front bumper with outline tape all around with the spoiler just held in place by two people. You will need to remove your aftermarket lower mesh grill or the spoiler won't sit properly.
And last, don't move the car for 24 hours after installation.
Hope this helps
