4WD
$50 site donor 2024
Yep … last one I put in was airflow down …Some cabin filter containment boxes will only fit correctly in one direction. Unfortunately many think it does not matter and will install them in anyway not realizing they are not actually sealing as designed. Or assuming what the arrow means regarding installation.
So yes and arrow may be indicating to top of the filter and not the airflow. Another example of redesign the installation instructions .