PTP heat protection for hoses, pipes, electronics and components Spark Plug Boots - blue - 2 pcs Protects Spark Cables and Plugs Prevents missfire caused by plug-wire burnouts PTP Spark Plug Boots provide high temperature protection for your spark plug wires. With a special coating and easy to slip on design, the PTP Spark Plug Boots are a great choice to protect your expensive spark plug wires and prevent misfires caused by plug-wire burnout. Just slip these 3/4" diameter double thickness (triple thick at the sewn end) sleeves over any spark plug cable and boot (even right angle boots) to protect them from engine temperatures up to 650°C. PTP Spark Plug Boots are completely non-conductive, resist all engine chemicals, and will not support combustion. Once installed, the sleeves require no clearance from hot surfaces, and can even rest directly on hot exhaust headers without affecting performance. Highlights: Economical, Long Lasting Protection Easy, slip on design, even 90° angles Halogen Free Resists Gasoline and Engine Chemicals Protects up to 1,200 °F Color: blue Contains: 2 pieces