Brand beru part name spark plug part number z129 technical specification electrode gap mm 1 6 spanner size 16 mm thread length mm 19 recommended replace interval km 20 000 tightening torque nm 25 spark plug 4 earthed electrode fuel type liquefied petroleum gas lpg thread size m 14x1 25 port type sae manufacturer release unverb empfehlung oen part numbers porsche 999 170 207 91 porsche 999 170 218 90 porsche 999 170 219 90 this part fits with the following models