KEY FEATURES & BENEFITS: EXTREME HEAT RESISTANCE: Crafted from high-quality fiberglass fabric coated with a durable titanium finish, these sleeves can withstand continuous temperatures up to 2500°F (1371°C), offering superior protection against radiant heat from headers and exhaust manifolds. PREVENT MISFIRES & PREMATURE FAILURE: Intense heat can break down spark plug wire insulation, causing electrical arcing, power loss, and a rough-running engine. These sleeves create a robust thermal barrier, ensuring a strong, consistent spark and extending the life of your ignition wires. .