Vented grill inserts for the rear bumper of your 1M. Finally replace the old fake vent with a real vent!
 
These parts replace the OEM rear bumper inserts (marked 51128052497 and 51128052498 respectively) found as a set in P/N 51118053877. This is the vented version, but we also have a non vented version if you're looking for a more OEM-correct look. The vented version is modelled after the front lower grill- same pattern, scaled down about 30% and turned 90 degrees. This gives a nice OEM style look that meshes well with the vehicles' original design language.
 
The vents snap into place into the rear bumper the same exact way as the original parts. The left side is easily changeable from underneath, but for the right side you may have to use some fishing line to 'pull' the vent into place. Alternatively, you can disconnect the bumper cover and install them from the backside that way.