I just purchased my BMW Performance Intake today. The seller told me it was only on for a month because he traded in his 328i for a 335i. I already had a K&N in my factory airbox which I kept. The K&N that came with the intake looks to be in new condition. My filter even looked a little dirty compared to this filter. I am selling the K&N filter that I recieved today with my original box. I will let this go for $40.00 shipped anywhere in the US. PM me if interested.