The AP Exhaust 700386 Exhaust Muffler is a direct-fit MSL/MAXIMUM muffler designed to meet the specific needs of Nissan Frontier and Xterra models from 1999 to 2004. Constructed from 100% aluminized steel, this muffler offers enhanced durability and resistance to corrosion, ensuring a longer service life. Its oval shape with dimensions of 7" in height, 9" in width, and 18" in length allows for easy integration into existing exhaust systems without the need for modifications. The muffler features a baffled design that effectively reduces noise levels, providing a quieter ride while maintaining optimal back-pressure performance. The inlet and outlet diameters are both 2", with the inlet located at the right center and the outlet at the left center, facilitating straightforward installation. This product is engineered to perform like original equipment, ensuring maximum sound control and back-pressure performance. By choosing the AP Exhaust 700386 Exhaust Muffler, fleet operators can expect reliable performance, reduced maintenance costs, and improved vehicle operation efficiency.