This LS steam port kit includes OEM block offs and bolts for easy installation. Designed for use with LSX 4.8, 5.3, 6.0, and 6.2 engines, it is compatible with a wide range of vehicles. The kit features a new style design and is made from high-quality materials to ensure long-lasting performance. With this kit, you can improve your engine's cooling efficiency and prevent overheating. Whether you're a professional mechanic or a DIY enthusiast, this kit is an excellent choice for enhancing your vehicle's performance.