B.La. To seat alpha romeo Thread length mm : 19: mm, gnistposition mm : 3: mm, spark plugs: 1-stelelektrode, spark plugs: not interference suppression, spark plugs: with flat tætningssæde, spark plugs: fixed sae-tilsluting, spark plugs: nikkel-midterelektrode, nøglespændvidde: 16 mm, external thread mm 433: externally thread mm : 14,0: mm
