RacingLine R600 Replacement Filter (Filter Type- Foam, MAF Sensor- Yes)RACINGLINE AIR FILTER CHOICES Trifoam filter versus Cotton filter Many of RacingLines Air Intakes now come with a choice of air filter material. Which is right for you? TRIFOAM FILTER UNIT Faster, for longer The highest airflow of all filter types, for the best possible power for more of the time. As a high performance part, regular maintenance is essential to keep it at its very best. for R600: VWR12 G7R600 PLEATED COTTON FILTER Fit and forget A