3-2-1 Stainless Steel Header 1 3/4" x 1 1/4" Primary Runners

This upgrade provides more usable power felt throughout the rev range and contributes to an enhanced, more engaging driving experience with an optimized, performance-oriented exhaust tone. Constructed from genuine T-304 stainless steel, this header features a mirror polish surface, CNC machined flanges, and TIG and MIG welded construction for durability and a premium finish. It incorporates a 3-2-1 design with primary runners measuring 1 3/4" width by 1 1/4" height. The inlet measures 2.0" (50.8mm) and the outlet is 2.5" (63.5mm), with two O2 sensor locations retained for factory compatibility. Installation is straightforward with a direct bolt-on design, requiring no cutting or welding. The Flashark header is compatible with most stock and aftermarket exhaust systems designed for the Infiniti G37 and Nissan 370Z platforms. It is specifically designed for the VQ-series naturally aspirated V6 engines, which respond exceptionally well to airflow improvements. This exhaust header is verified to fit the following vehicles: 2007-2008 Nissan 350Z (Factory-Equipped 3.5L V6 VQ35HR Engine ONLY), 2009-2013 Nissan 370Z (Factory-Equipped 3.7L V6 Engine; All Body Styles), and 2008-2013 Infiniti G37 (G37/G37X/G37XS Trims; Factory-Equipped 3.7L V6 Engine; All Body Styles).