Koolsox Plug Boots Black (4pk) Hi Heat

The Koolsox Plug Boots Black (4pk) Hi Heat are designed to protect spark plug terminals and ignition components from extreme underhood temperatures, moisture, and electrical arcing, making them ideal for high-performance and modified engines. These boots are essential for anyone running turbocharged setups or upgraded ignition systems, ensuring reliable heat protection for daily drivers as well.

Constructed from high-temperature rated silicone, the Koolsox boots resist degradation from sustained temperatures that exceed those of standard rubber compounds. Their snug fit minimizes movement and vibration transfer, which helps reduce the risk of terminal separation or intermittent misfires, particularly in modified engine builds where stress on spark plug wires or coil packs is increased.

Mechanics and enthusiasts working on street performance builds, daily-driven turbocharged vehicles, and restoration projects will find these high-temperature boots beneficial. The four-pack provides complete coverage for standard 14mm and 18mm spark plug terminals, ensuring compatibility with a wide range of applications.