Stainless Steel Exhaust Header Y-Pipe Kit

The Flashark Long Tube Headers with Y-Pipe is engineered as a direct replacement for restrictive factory cast manifolds, addressing common issues such as the "Chevy tick" caused by warped or cracked components. Designed for 1999-2006 Chevy Silverado, GMC Sierra, and Avalanche 1500 trucks and SUVs with 4.8L, 5.3L, and 6.0L Vortec V8 engines, this kit promotes improved exhaust scavenging, leading to better throttle response, mid-range pull, and an enhanced V8 sound. Constructed from durable stainless steel with TIG welds and CNC flanges, these long tube headers offer superior resistance to heat, pressure, and corrosion compared to stock manifolds. The system features 1.83-inch primary tubes that connect to a 3-inch Y-pipe, designed for optimal flow. The kit includes the necessary gaskets and hardware for installation. Installation is designed as a bolt-on for 2WD models. However, 4WD models may require modifications to the Y-pipe to ensure clearance with the front driveshaft. Additionally, if equipped with a larger 4L80E transmission, the bellhousing ears might need trimming for adequate clearance. O2 sensor extensions may also be necessary due to the headers altering sensor location. A professional tune is strongly recommended after installation to optimize performance and prevent check engine light issues. With proper supporting modifications such as an upgraded intake and exhaust system, and a professional tune, builds can potentially see horsepower and torque gains in the range of 20-25+ HP. Even without a tune, owners can expect a sharper engine feel and a deeper exhaust note. The kit is ideal for owners looking to replace leaking factory manifolds, achieve a more aggressive exhaust sound, or improve performance on cammed or tuned GMT800 trucks.