The Gibson Performance Header Part Number GP312S is designed to enhance the performance of your Dodge Ram 1500 SRT-10 with an 8.3L engine from 2004 to 2005. Crafted from durable 16 gauge stainless steel, this header is engineered to improve airflow, resulting in increased horsepower and torque across low and mid-range RPM highway speeds. Its mandrel-bent tubing ensures smooth exhaust flow, while the heavy-duty 3/8 inch thick laser-cut port flanges prevent warping or leaking, providing reliable performance over time. This direct replacement header uses OEM style connections, making installation straightforward without requiring welding. It includes premium gaskets and hardware to ensure a secure fit and optimal seal. The product's design promotes cooler engine temperatures and better breathing, contributing to overall engine efficiency and longevity. Suitable for both street and off-road use, it is an excellent upgrade for lowered or raised vehicles seeking improved exhaust flow and performance. Heavy Duty 3/8 inch thick laser-cut port flanges for durability and leak prevention. 16 gauge stainless steel tubing for corrosion resistance and strength. Mandrel bent tubing to optimize exhaust flow and increase power. OEM style connections for easy installation without welding. Premium gaskets and hardware included for secure fit and sealing. Orders are processed quickly and packaged with care.