This inner brake drum has an inner diameter of 230mm and an outer diameter of 273mm. The total brake drum height is 76mm, with a centering diameter of 57mm. It features two bore diameters: 14.5mm and 10.3mm. The maximum skimmed drum measure is 230.9mm, and the inner brake drum height is 59mm. This drum has 4 holes with a bolt hole circle diameter of 100mm. It is designed for the rear axle and is compatible with vehicles from 08/1968 up to 12/1987. This part is suitable for vehicles with a fully automatic transmission and ABS braking systems. Key compatible OPEL models include Kadett E CC, Manta B, Kadett E Cabrio, KADETT C Coupe, COMBO, KADETT C, KADETT B, REKORD E, ASCONA B, Kadett E Limousine, MANTA A, REKORD C, REKORD D, Kadett E Caravan, KADETT B Coupe, MANTA B CC, ASCONA A, ADMIRAL A, Kadett C CC, REKORD E Caravan, KADETT C Caravan, REKORD C Coupe, COMMODORE A, REKORD A, COMMODORE A Coupe, KADETT B Caravan, REKORD D Coupe, KADETT D Caravan, REKORD C Caravan, REKORD B, REKORD B Coupe, REKORD D Caravan, REKORD A Coupe, Ascona A Caravan, DIPLOMAT A, REKORD B Caravan, OLYMPIA A Coupe, OLYMPIA A, Rekord A Kombi, and DIPLOMAT A Coupe. VAUXHALL compatibility includes CAVALIER Stufenheck, CORSAVAN Mk I (B), Viceroy Limousine, CARLTON Mk II Estate, Astramax (T85), Combo Mk I (B) Kastenwagen (S93), Cavalier Mk2 Kombi (J82), Cavalier Mk1 Coupe, Cavalier Mk1 Targa, Carlton Mk2 Limousine, ASTRA Mk II Sedan, ASTRA Mk II Estate, and Astra Mk1 Kombi. It is also compatible with BEDFORD Astramax Kastenwagen. OEM part numbers include 568056, 90077721, 90135264, 568038, 568051, 568052, 90077720, 90090085, 90168426, and 92014927.