IN/EX:EX D: 26.9 mm d: 6 mm L : 106.1 mm a :45° Head Style:PN Stem Groove:K GIEFFERef:0115 Motore:M50B20/ M52B20/ M54 Certification:IS09001, TS16949 Mark & Model:320 E46/ Z3 2.0/ 520 E39/ 520 M54/ Eng.M50B20-M52B20