Fiberglass braided spark plug boot sleeves engineered for high-heat protection, shielding plug boots from header temperatures up to 1,200°F. The black heat-resistant weave provides long-lasting durability and a clean appearance. Each sleeve measures 7-1/2 inches long and fits over most common plug boot shapes. Perfect for performance engines or tight exhaust clearances. Sold as a set of eight for complete V8 coverage.