GEN 4 Header

The Active Autowerke E46 M3 Gen 4 Header is engineered to optimize exhaust flow and enhance performance without sacrificing power. Developed to create optimum flow and eliminate restrictions, this header is ideal for naturally aspirated and supercharged forced induction E46 M3 models. Its construction utilizes 100% 304 stainless steel, ensuring long-term durability and resistance to corrosion. The key features include the creation of optimum flow, elimination of restrictions, and dyno-tested improvements in HP and torque gains. The header boasts a polished 100% 304 stainless steel construction and offers precise, OEM-style fitment. It is important to note that the factory exhaust catalysts are removed with this header, and it is recommended for off-road applications. A Check Engine Light (CEL) may occur without the Active Autowerke Software Upgrade for off-road use. The product comes with an illustrated instruction manual and is backed by a two-year warranty.