4-1 Exhaust Header, 1.50" Primary Tubes

The SSNPerformance exhaust manifold header is crafted from premium T-304 stainless steel, ensuring durability and resistance to corrosion. Its construction features CNC machined flanges, meticulously joined with both TIG and MIG welding for a robust build. The header boasts a 4-1 piping design, with 1.50-inch primary tubes that feed into a 2.50-inch outlet. Specific dimensions include a head flange thickness of 7/16 inches and an outlet flange thickness of 3/8 inches. This design facilitates superior exhaust gas scavenging and significantly reduces back pressure. These improvements can lead to enhanced engine efficiency and power output. This specific exhaust manifold header is designed to fit the Nissan Hardbody D21 Pickup and the 4Runner models manufactured between 1990 and 1995. Crucially, it is exclusively for 4WD models equipped with the 2.4L 22RE engine. It is important to note that this part is not compatible with 2WD configurations or other engine variants not listed. ⚠️WARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.