Brand ngk part name spark plug part number 5542 technical specification spark plug 1 earthed electrode outer thread mm 14 0 spanner size 16 0 mm thread length mm 19 spark position mm 3 5 spark plug fixed sae connector spark plug interference suppression 5 kohm spark plug platinum middle electrode spark plug with gasket seat oen part numbers opel 12787099 saab 12787099 this part fits with the following models opel signum 2 0 turbo 03 175 1998 opel vectra c 2 0 16