Upgrading vehicles exhaust system is a great way to build horsepower, free up trapped torque, and improve upon restrictive factory systems. The larger pipes, low-restriction mufflers, and tuned resonators of a well-designed performance exhaust system can make a world of difference on your vehicle. The net result is lower auto exhaust backpressure, more horsepower, more torque, and a much better sound. Compatible With ALTIMA 2002-2006 Manual Transmission; Compatible With MAXIMA 2004-2008; Compatible With MURANO 2003-2007; Compatible With QUEST 2004-2006; Fits Front Radiator Side V6; NOT Legal for sale or Use in California, New York, Or Maine Emissions Models