K&N 15-18 Audi A4 L4-1.4L 18-20 A5/RS5 2021 Q5 F/I Drop In Replacement Air Filter Stage 5 Thread Size 1 1/4" Outside

Thread Size 1 1/4" Outside Dia 1

8 - Black Body / Neochrome Ring

We have also made some internal changes to give it a better feel overall as well

GReddy 00-09 Honda S2000 Revolution RS Exhaust

K&N 15-18 Audi A4 L4-1.4L 18-20 A5/RS5 2021 Q5 F/I Drop In Replacement Air Filter Stage 5 Thread Size 1 1/4" OutsideK&N's replacement air filters are designed to increase horsepower and acceleration while providing excellent filtration. We make over 1,200 different replacement air filters for the majority of vehicles on the road. These filters are washable and reusable and are custom designed to fit into your existing factory air box. Their drop in design means adding performance is simple. With most vehicles you simply remove the disposable air filter and replace