PLM Subaru WRX Equal Length Turbo Header Manifold 2015 - 2020PLM Private Label Mfg. Equal Length Header Turbo Manifold Subaru Impreza WRX 2015 2021 By eliminating the bulky and restrictive factory manifold, our PLM turbo header delivers great low to mid end power while utilizing an one piece equal length design which maximizes the engine performance. The header will bolt up to the stock location as a direct replacement. Starting from the front of the vehicle the header is designed as a much better free flowing