Bumper/Splitter Seal

MXA-SS

If you have a NA or NB without a lip either factory or aftermarket, this will fill the gap between the Splitter and the bumper since factory bumpers are not flat. The same applies if your lip or bumper is not flat at the bottom.

You could also get this if you just want something that fits between the Splitter and your car.

The seal comes with double-sided tape and can be attached to the splitter or the car.