aFe MagnumFLOW Air Filters UCO P5R A/F P5R 3-1/2F x 6B x 4-3/4T x 8H 2000-audi-s4-base-esi6113601 It is designed to be

It is designed to be used with the Borla(r) Cat-Back(tm) systems 140750

Notched necks are designed for clamp in installation using 1" wide band clamps

Black bezel and black dual faced faceplate included (gauge only

Systems with polished T-304 stainless steel tips and carbon fiber tips are also available

aFe MagnumFLOW Air Filters UCO P5R A/F P5R 3-1/2F x 6B x 4-3/4T x 8H 2000-audi-s4-base-esi6113601 It is designed to beConstructed with 100 percent polyurethane on top and bottom, this high flow, oiled performance filter is our highest flowing media for improved horsepower and torque. Five layers of progressively finer mesh cotton gauze media provide maximum airflow for best performance results. Washable and reusable for multiple cleaning cycles, the tall open evenly spaced pleats provide excellent dust holding capacity for longer service cycle between cleanings.