aFe Magnum FORCE Intake Rplcmnt Air Filter 7-1/8 IN F x (8-3/4 x 8-3/4) IN B x 7 IN T x 6-3/4 IN H - 72-91068 fits_2003-2008`Audi`S4 With the Valvetronic Designs Valved

With the Valvetronic Designs Valved Stainless Steel Exhaust System

The result is an ultra-lightweight ultra-durable shell finished in a high-gloss UV-resistant coating that resists yellowing and wear while perfectly echoing your vehicle’s motorsport-inspired character

This system produced gains of up to +14 HP and +17 lbs

Supersedes Part# 45553

aFe Magnum FORCE Intake Rplcmnt Air Filter 7-1/8 IN F x (8-3/4 x 8-3/4) IN B x 7 IN T x 6-3/4 IN H - 72-91068 fits_2003-2008`Audi`S4 With the Valvetronic Designs ValvedWith seven layers of progressively finer mesh cotton gauze synthetic media between 100 percent polyurethane top and base, this high flow "oiled" conical performance filter provide maximum protection with highest cumulative filtration efficiency for severe duty environments. Washable and reusable for multiple cleanings, the tall open evenly spaced pleats provide excellent dust holding capacity for longer service cycle between cleanings. Integrated