The aFe MagnumFLOW PRO 5R (MPN 30-10225) is a panel-style, oiled replacement filter designed to fit the factory airbox on the N20 2.0L turbo four in the F30 BMW 328i, and product listings also show it for the N47 diesel 328d. Its five-layer cotton gauze media is washable and reusable, so you can clean and re-oil it across multiple service intervals instead of replacing a disposable element each time. For a turbocharged N20 breathing through the stock box, this is a practical intake upgrade that keeps the factory housing and MAF sensor in place, without the cost and tuning questions of a full cold-air intake. Search terms this part matches include F30 328i N20 reusable air filter, BMW 328d N47 washable air filter, and aFe Pro 5R 30-10225 F30 install.
Fitment is the detail to confirm before you buy. The product title lists 2012 to 2015 applications, while other sources list the 30-10225 for 2012 to 2016 and some 2018 F30 and F31 models, including 320i and 328d variants, so check your VIN against the manufacturer's fitment guide. Installation is generally a tool-light job. Owners on user forums describe four clips on the airbox lid that can be released by hand or with a flathead screwdriver, and they warn that a clip can drop into the engine bay during removal. Some owners lift the lid and swap the filter without disconnecting anything, while others loosen the intake tube and unplug the MAF sensor for more room. Plan for the more involved version if your engine bay is tight.
Sources do not agree. The product title references 2012 to 2015 applications, while other listings show 2012 to 2016 and some 2018 F30 and F31 models. Confirm your exact model year and engine code with the manufacturer's fitment guide before ordering.
Owners on user forums report that it depends on the vehicle and the individual. Some lift the airbox lid and swap the filter without unplugging anything, while others loosen the intake tube clamp and disconnect the mass airflow sensor for more working room.
Owners on user forums describe this as a beginner-friendly job that needs only a flathead screwdriver. Pop the hood and release the four clips on the airbox lid, which sit on the right side, the top left, and the left side when viewed from the front of the car. Pry them with finger pressure or a small flathead, and keep track of each clip because one can fall into the engine bay. Lift the lid off its rubber grommets and pull out the old filter. Before installing the new one, wipe out any leaves or dirt in the housing. If the lid will not lift freely, loosen the intake tube clamp and unplug the MAF connector, then reverse the steps to reassemble. Keep the airflow direction in mind when seating the filter so it sits flush in the box.
