DC Sports HHS5022B Polished Performance Stainless Steel 4-2-1 Header/2 pieces Fits 2003-07 Honda Accord All Models Dyno tuned and tested to deliver impressive low-to-mid range power gains CAD rendered to manufacturers specifications for a precise fit CNC mandrel bends with robotic welds and a 2-piece design for an easy install CNC machined flanges with O-ring seals to eliminate leaks Comprehensive installation instructions, all necessary hardware and decals included