4 Pcs No.A0009055504 Car Bumper PDC Backup Parking Reverse Assist Sensor for Mercedes-Benz GLE-Klasse Coupe C292 2015-Present 19mm Fitment:for Land Rover Freelander 2002-2005

Fitment:for Land Rover Freelander 2002-2005

for Mercedes-Benz CLS400 2015-2018

Fitment: for Volkswagen Routan 3

there are no air holes

for Toyota 4Runner 2006

4 Pcs No.A0009055504 Car Bumper PDC Backup Parking Reverse Assist Sensor for Mercedes-Benz GLE-Klasse Coupe C292 2015-Present 19mm Fitment:for Land Rover Freelander 2002-2005Features: Direct replacement, easy to install. The PDC system works by setting a PDC parking sensor on the front or rear bumpers of the car, detecting obstacles in front and rear, and helping the driver to "see" the obstacles when parking. Accurate measure the distance of vehicle rear and nearest obstacle. It's convenient to park, this device protects the car body from scratches. When the car is back to its limit, this parking sensor will warning to