Racingline High-Flow Air Filter for Audi S4 & S5 (B8).
The 3.0 TFSI supercharged engine in the B8/B8.5 S4 & S5 will really benefit from our TriFoam™ High Flow Intake Filter. Using the exact same filter material as our intake systems, it’s a simple-fit replacement for your factory paper filter. Expect a worthwhile boost to engine efficiency as a perfect complement to either a standard engine or those running uprated power.