Spanner size 20,8 mm, Outer Thread 14,0 mm, Thread Length 9,5 mm, Unscrew able SAE connector, Spark Position 1 mm, Nickel Middle Electrode, 1 - Earthed Electrode, no interference suppression, with gasket seat Equivalent to :
Beru : Z270
Bosch : W11EO
Brisk : J19
Champion : J19LM
Denso : W9LM-US