4-2-1 Stainless Steel Exhaust Header

The Flashark 4-2-1 stainless steel exhaust header is engineered to enhance the exhaust path, sharpen throttle feel, and improve daily-driving responsiveness for specific Honda Accord models. This header is specifically designed for the 1998-2002 Honda Accord EX/LX with the 2.3L inline-4 engine, compatible with F23A1, F23A4, and F23A5 engine codes. This upgrade is ideal for owners looking to replace aging or leaking factory exhaust manifolds and improve upon a restrictive stock exhaust system. The 4-2-1 layout is chosen for its ability to support better low-to-mid RPM response, making it a practical choice for street-driven vehicles. Drivers can expect a sportier exhaust tone and potentially improved engine responsiveness, especially when the rest of the intake, exhaust, and sensor systems are in good condition. Constructed from durable stainless steel with a mirror polish finish, this header features a 1.75-inch inlet, a 2.00-inch outlet, and a 3-bolt mounting style. It includes an O2 sensor bung and is ISO9001:2000 certified. Potential performance gains are estimated between 8-20 horsepower, though actual results depend on various factors including engine health, catalytic converter efficiency, intake setup, and proper installation. Older exhaust hardware may require extra time, heat, or penetrating oil for installation. Critical fitment applies to 1998-2002 Honda Accord EX and LX trims with CG1/CG2 chassis codes and the F23A1, F23A4, or F23A5 inline-4 engines. This header will NOT fit Honda Accord V6 models, earlier generation Accords (pre-1998), 2003 and newer Accord models, or Honda Civic D17 applications.