NGK R5671A-7 Racing Spark Plug

R5671A-7 spark plug for racing engines must withstand stresses particularly intense. High engine speeds values of temperature and of extremely high pressure intense vibrations and temperature fluctuations in the combustion chamber induce stress on components so high that a conventional ground electrode may break or melt. For this reason the candles Racing are often designed without ground electrode; the spark from the electrode central flowing towards the inner surface of the metal body on the lower surface of the insulator nose. In some specialties motoristiche where it is required a good driveability of the vehicle in order to improve the performances of the engine ignition may be used to particular design of candles racing with central electrode alloy of iridium and a small ground electrode rectilinear (slant type) specially designed to minimize the risk of breakage by vibration.

NOTES: to check compatibility with your model consult the NGK catalogue