I had one of the recalled K&N 204 filters,,, from a recalled batch. I understood the problem was related to the spot welds where the nut is attached to the filter body. Some were porous. I checked my filters (it was on the bike) batch numbers,,, and found it was in the recall. I advised the dealership where I bought the filter,,, so that they could follow up with other customers. I filled out the recall form and sent it to K&N, along with a photo,, via email. A new filter arrived in a week. It was obviously a dangerous situation,,, as a faulty weld could be temporarily sealed by the black paint. Some opine that the spot welds create an unnecessary hazard,,, and it is hard to argue with that,,, cheers,,, CAt'