Upgrade and maintain your Big Block V8 engine with this premium Cylinder Head Bolt Set, engineered for superior performance and durability. Made from hardened steel, these bolts provide reliable clamping force and long-lasting performance for engines with cast iron cylinder heads. Designed as a direct replacement, this set ensures seamless compatibility with 454 and 502 Big Block V8 engines from 1965 to 1998. This complete set includes all bolts necessary for an entire engine rebuild and is OE-spec, making it ideal for restoring or enhancing your engine's performance. With cross-references to popular OEM part numbers, this kit is a reliable and precise solution for your engine repair or rebuild project.