Integrated Engineering Harsh Climate 5" Oiled Air Filter & Sock Upgrade Kit - Audi S3 8V 13-20Upgrading your IE 5" velocity stack intake with our harsh climate filter kit will further keep your engine safe when traveling on dirt roads, sandy beaches, or anywhere with dusty contaminants in the air This complete filter kit uses a 3 step approach to combat harsh climates. The filter has been increased from a 6 pleat construction to 8 pleats to increase cotton density. The cotton pleats are then treated with a penetrating filter oil to further