Tempest Spark Plugs

High Conductivity Copper Core Center Electrode
Copper, co-extruded inside a nickel alloy sleeve ensures outstanding heat and electrical conductivity while the nickel sleeve offers high resistance to corrosive combustion gases.

Proprietary Glass Center Seal
21st century ‘fired in’ resistor replaces the multipart screw, spring, and carbon pile stack up used in  competitive plugs and known to suffer from resistance value instability that can cause misfires, wasted fuel, and engine roughness.

High Alumina Ceramic Insulator
High mechanical strength, superior dielectric properties, and proprietary protective glaze, provides high performance to conquer severe operational conditions. “Clean Collar” massive electrode “V” tip focuses heat to reduce fouling and enhance heat range control.

Nickel Finish
Environmentally preferable electrolytic nickel provides outstanding durable finish, superior corrosion protection, and extreme wear resistance.