4-2-1 Stainless Steel Header

The ISR Performance Tubular 4-2-1 Header is constructed from stainless steel and engineered for the Nissan 240sx KA24DE engine, covering model years 1991 through 1998. This 4-2-1 design aims to optimize exhaust flow for improved performance. The header features a 3-inch flange, allowing for a straightforward bolt-on installation to either the factory catalytic converter or an aftermarket test pipe and exhaust system. Included with the header are an exhaust manifold gasket and a 2-bolt 3-inch gasket for convenience during installation. This product is designated for use only in competition vehicles that will not be registered, licensed, or used on public streets or highways. It is also intended for use in other exempted vehicle types.