🔧 Elevate Your Engine Game with Unmatched Reliability! Comes with a lifetime warranty for worry-free performance. Constructed from high tensile strength chromoly steel with a sleek black oxide finish. Includes all necessary components: 10 M8 studs, 20 M11 head studs, and more. Crafted for zero defects with hardened washers for uniform load distribution. Fits 2004-2019 LS1, LS3, and Chevy LS6 engines seamlessly. M11 Thread Size 8740 Chromoly Steel Lifetime Warranty The 12-Point Cylinder Gasket Head Stud Bolt Kit is a high-performance replacement for 2004-2019 LS1, LS3, and Chevy LS6 engines. Made from durable 8740 chromoly steel, this kit includes all essential components for a complete installation, ensuring precision and reliability with a lifetime warranty.