These Stage 8 locking header bolts from Ford Racing are designed to be 100 percent reliable. According to Ford, there have been zero failures in more than 6,000,000 applications! They absolutely, positively will not back out. These bolts eliminate the need to monitor and tighten bolts regularly.
Ford Engine Bolts and FastenersFord Racing offers their Fastener Kits and Components because they understand it may be difficult to find the parts you need for your performance application that are consistent and reliable. Ford Racing offers their fasteners built to their specifications and designed to meet their high standards for performance and reliability. Ford Racing knows that some of their engine blocks and cylinder heads aren't compatible with factory size bolts and they know you don't want to have to buy multiple kits to get the fasteners you need Ford Racing offers application specific fasteners all in one kit.
WARNING: Motor vehicles contain fuel, oils and fluids, battery posts, terminals and related accessories which contain lead and lead compounds and other chemicals known to the State of California to cause cancer, birth defects and other reproductive harm. These chemicals are found in vehicles, vehicle parts and accessories, both new and as replacements. When being serviced, these vehicles generate used oil, waste fluids, grease, fumes and particulates, all known to the State of California to cause cancer, birth defects, and reproductive harm.
WARNING: Some dust created by power sanding, sawing, grinding, drilling, and other construction activities contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Some examples of these chemicals are: lead from lead-based paints, crystalline silica from bricks and cement and other masonry products, and arsenic and chromium from chemically treated lumber. Your risk from exposure to these chemicals varies, depending on how often you do this type of work. To reduce your exposure, work in a well-ventilated area and with approved safety equipment, such as dust masks that are specially designed to filter out microscopic particles.
WARNING: The wires of these products contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling.