I have removed the air filter from our 2020 Plus Six, the air filter fitted by the factory is a MAHLE LX 2077/3 the BMW ref number 13718507320 was also on the filter. I know this is as factory fitted, due to the manufacturing date stamped on the filter and the fact that none of the 10mm headed bolts that hold the filters retaining plate had ever been removed, they were still covered in the original underseal!.
The retaining plate under the wing comes off easily and the filter simply sides down and out from its retaining slots. The filter was fairly grubby along its lower edge where it is located by the retaining plate, the plate itself does not have an inner seal on it, so it may be worth taking it off and running a very fine silicon bead of 2mm along its inner edge, then allow it to completely go off and refit. We live down a messy and mostly wet country lane and the air filters retaining plate is in line with the front wheel spray, so I can see how water may have worked its way into the bottom of the filter.
A quick search of the internet in the UK showed a genuine replacement filter to have a lowest price between 13 to 19 pounds delivered.
dave
Last edited by Davetherave; 27/11/24 02:30 PM.
