Brisk Premium Racing Spark Plug - 12 mm Thread - 19 mm R - Heat Range 12 - Gasket Seat - Resistor BR12ZC 111022 but require a special key

but require a special key tool for installation and removal

These pieces are commonly used in Porsche applications where space for an Eye bolt is insufficient

Super Seal

and increase fuel economy

Brisk Premium Racing Spark Plug - 12 mm Thread - 19 mm R - Heat Range 12 - Gasket Seat - Resistor BR12ZC 111022 but require a special keyProduct Description: Spark Plug Premium Racing 12 mm Thread 19 mm Reach Heat Range 12 Gasket Seat Resistor Sold Individually Since its founding in 1935, Brisk has been a leading innovator and producer of spark plugs. Serving both the OEM and the aftermarket and racing industries, Brisk offers a wide range of spark plugs for a variety of applications, including iridium, platinum, and yttrium. Brisk's silver center electrode technology makes them the