IN/EX:EX D: 25.4 mm d: 6 mm L : 87.5 mm a :45° Head Style:PN Stem Groove:K GIEFFERef:3121 Motore:BLB/ AZV/ BKD/ BRE Certification:IS09001, TS16949 Mark & Model:A4 2.0 16V Tdi/ A6 2.0 16V Tdi