Exhaust Headers for Toyota Corolla (1993-1997) 1.8L EngineHigh Flow T 304 Stainless Steel 4 2 1 Exhaust Headers for 1993 1997 Toyota Corolla (7A FE AE102) Replaces the restrictive factory cast iron manifold with a mandrel bent stainless steel system to optimize exhaust gas scavenging and reduce backpressure. The Stock Corolla Exhaust Manifold Weakness The factory exhaust manifold on the Toyota 7A FE engine is a heavy, cast iron unit engineered for production cost rather than volumetric efficiency. This OEM