Manufacturer: FAI AutoParts. Bolt Head-/Nut Design: Male Torx. Thread Size: M11 x 1.5. Interchange Part Numbers: BK3351--BGA, ADN17815--BLUE PRINT, CCA1544L--COMLINE, 373.281--ELRING, 103508--FEBI BILSTEIN, 194291--FEBI BILSTEIN, 24074--FEBI BILSTEIN.