aFe MagnumFLOW Air Filters UCO P5R A/F P5R 5F x 6-1/2B x 4-3/4T x 7H 2002-audi-s4-avant-esi4223574 It had dual 4" carbon

It had dual 4" carbon fiber tips with black anodized centers on each muffler

AA1-HDR6 kit features ACT's most popular Heavy Duty pressure plate

Bilstein Replacement Spring 15

adjustable fuel pressure regulator

aFe MagnumFLOW Air Filters UCO P5R A/F P5R 5F x 6-1/2B x 4-3/4T x 7H 2002-audi-s4-avant-esi4223574 It had dual 4" carbonConstructed 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.