Review on MANN-FILTER CUK 2736-2 Cabin Air Pollen Filter - Activated Carbon Enhanced by Jason Cox

Okay yeah they don't have a black plastic thing, I see. but look what you get for the price! If you replace them once a year, the cost will increase over time. But isn't that the purpose of self-maintenance for our BMWs? Install with the arrows pointing up. Make sure you take a clean cloth (or your vacuum cleaner will work too) and clean the filter box and the dust plugs in the corners! Finally, CAREFULLY place the clean air filter in the clean box. You have to be careful around the edges, I suggest adjusting the filter media yourself, and the filter media is much stronger and if it gets pinched a little, it doesn't matter. Otherwise, you risk not getting a full seal if you pinch corners or edges. Now that I think about it, I could get them cheaper (outlined in black) from RockAuto, but I love my first class shipping.