An equal-length exhaust header/manifold for the BMW M52/M54 inline-6 (E36/E46), designed to improve exhaust flow and power over the stock log-style manifold. Kungfu Performance sells this style of header on AliExpress; a comparable equal-length header of the same part type and fitment ("Exhaust Manifold Equal Length Headers for BMW E36 325i 323i 328i M3 Z3 M50 M52") is offered in stainless steel with a 1-year warranty.