This K&N Air Filter replaces the original equipment unit on BMW 3 Series and BMW X3 2.0L Turbo Diesel models built from 2015 to 2025. Restriction is measured at under 110kPa at rated engine airflow. The Cotton Gauze media traps fine dust without choking airflow, which matters on Australian gravel and unsealed roads. Service life of around 40,000km applies in normal conditions; halve that for dusty and rural use. Panel dimensions are approximately 310mm x 180mm, with a moulded polyurethane frame that seals hard against the airbox. The frame is fully sealed at the corners to stop unfiltered air bypassing the element. Supplied new and backed by a 24 Months warranty.