4-2-1 Stainless Steel Exhaust Header

The Flashark 4-2-1 stainless exhaust header is engineered to provide a cleaner exhaust path, sharper throttle feel, and a more responsive daily-driving setup for compatible sixth-generation Honda Accords. Built for 1998-2002 Honda Accord EX/LX models with the 2.3L inline-4 F23A1, F23A4, or F23A5 engines, this header aims to replace the restrictive factory manifold with a freer-flowing design. This header addresses common issues found in older F23A Accord platforms, such as aged or leaking manifolds, rusted hardware, and restricted exhaust paths. It can help refresh the exhaust manifold area, improve flow with its 4-2-1 layout, potentially lead to more responsive throttle input, and contribute to a sportier exhaust tone. The header is constructed from stainless steel with a mirror polish finish, featuring 1.75-inch primary inlets and a 2.00-inch outlet, and includes an O2 sensor bung. Installation is generally a direct bolt-on process using factory mounting points, though older vehicles may require extra time, penetrating oil, or replacement studs if the original hardware is seized or damaged. Buyers are advised to confirm their vehicle's year, model, trim, and engine code before purchase. The specific application is for 1998-2002 Honda Accord EX & LX trims (CG1/CG2 chassis codes) equipped with F23A1, F23A4, or F23A5 inline-4 engines. This product will NOT fit Honda Accord V6 models, 1996 or earlier Accord applications, 2003 and newer Honda Accord models, or Honda Civic D17 applications. It is also not intended for F22, F22B, or F22A1 engine applications unless separately confirmed, nor for custom swaps or modified exhaust systems without prior measurement. It is not presented as CARB-certified or 50-state emissions-legal; confirm local requirements. A tune is not always required for basic installation, but can affect drivability and results, especially with other modifications.