Evergreen EP9004 Subuaru WRX STi Forester Legacy GT Turbo Gasket Turbine Outlet to Downpipe (replace 44022-AA180) Fits: Subuaru WRX STi Forester Legacy GT Turbo (see description below) Resist the movement that arises from large fluctuations in temperature Prevent leaks in the exhaust manifold protect exhaust values Protect engines from loss of power and decreased fuel consumption Specialized designs to ensure a perfect fit and correct operation