The BMC panel air filter for Alpina B5 4.4L (2005–2007) is a direct replacement panel element sized to match the factory intake to restore filtration and airflow. It installs like the original filter for straightforward maintenance and is intended to replace a worn or clogged element to maintain correct engine breathing and help protect internal components from contamination.
BMC 05-07 Alpina B5 4.4L Replacement Panel Air Filter