Alpha Series T-304 Stainless Steel Header

This header is specifically designed for the 2012-2014 Honda Civic Coupe and Sedan Si models, leveraging a large 4-inch bellmouth and a 3-inch outlet to facilitate maximum air extraction and power gains. It features heavy-duty 1/2-inch thick flanges to ensure a secure, leak-free connection to the exhaust system. The smooth airflow is maintained through mandrel-bent T-304 stainless steel tubing and a robust stainless steel braided flex section. By eliminating the catalytic converter, this one-piece header design significantly maximizes exhaust flow, leading to increased power output. Installation is straightforward, as the header is designed as a direct bolt-on unit that utilizes the factory mounting locations for the OEM O2 sensors, connecting directly to the OEM exhaust cat-back location. No modifications are necessary for installation. Fitment is specific to the 2012, 2013, and 2014 Honda Civic Coupe (Si) and 2012, 2013, and 2014 Honda Civic Sedan (Si).