Looking for aftermarket parts to modify or upgrade your 2004 Audi S4 with forced induction? At Tunersports.com we carry a huge selection of the top name brand performance forced induction parts and accessories for your S4.
Whether you have a 2004 Audi S4 in Avant to Cabriolet trim we have you covered. With forced induction from nitrous systems to nitrous systems we have 9 S4 forced induction mods available. All parts have free shipping to the Continental US 48 States.
