Genuine Mazda replacement windscreen cowl screw grommet. This can be the cause of water getting into either the drivers or passenger side footwell. The foam gasket on the back drys out and falls apart leaving a direct path for water to follow into the cabin of the vehicle. There are two required per car, and they are located at either end of the windscreen cowl. Simply pop out the black oval shaped cap, removed the screw underneath, lift up the cowl itself to give you access to the grommet underneath.
Suits NC 2005-2014