The AP Exhaust 700454 Exhaust Muffler is engineered to provide a direct-fit replacement for the 2003-2004 Nissan Xterra, accommodating both rear-wheel and four-wheel drive models. Constructed from 100% aluminized steel, this muffler offers enhanced durability and resistance to corrosion, ensuring a prolonged service life. Designed to replicate the original equipment (OE) specifications, it delivers optimal sound control and maintains appropriate back-pressure, thereby preserving the vehicle's performance and exhaust tone. The muffler's dimensions are 22" in overall length, with a body measuring 18" in length, 9" in width, and 7" in height. It features a 2" inlet and outlet diameter, with the inlet located at the right center and the outlet at the left center, both configured as pipe types. This configuration facilitates straightforward installation, minimizing downtime and labor costs. By choosing the AP Exhaust 700454 Exhaust Muffler, fleet operators can ensure their Nissan Xterra vehicles maintain peak performance and compliance with noise regulations, thereby enhancing operational efficiency and driver satisfaction.