Review on 🌬️ Mann Air Filter C25 114/1 by Shaylon Bateson

This is not a filter sold by BMW dealers. The difference lies in the pre-filter material. The retailer filter has a 1/4" thick layer of foam over the paper folds. The filter under review has a sheet of gauze material of the same size. I don't know if one works better than the other, the main purpose of the extra material is to prevent that the paper folds get wet in case snowflakes get sucked into the airbox there is no doubt the filter in question costs about 1/3 of a dealer filter it fits perfectly.