When I bought my 370 these were already installed so not sure exactly how many miles are on the intakes, however the K&N filters were replaced by the dealership when i bought the car and have about 7k miles on them. I loved the car from the time i bought it with these intakes and never had any issues with them. They also look great IMO. Selling them now because i replaced with Z1 long tube intakes for the extra gains. PM for more details.
https://imgur.com/a/Qkj2tpN
https://imgur.com/a/xvLaPEI