BMW E46 M3 Long SystemThere is simply nothing currently offered as a package that provides the incredible HP, torque and sound as an ARH full system for your E46 BMW M3. This system features American Racing Headers patented rotational firing, 6 into 1 long tube header system for the E46 S54 powered M3. The Long System is a direct bolt in to your existing Axleback. Available with 1 3 4"primaries. This system fits: 2001 2006 BMW E46 M3 Product features on this system