This Beck Arnley suspension bushing fits Audi 100 and 200 models. It has a diameter of 43 mm on the exterior and 13 mm on the interior. The bushing is made of steel and rubber materials and is a vintage part with no universal fitment. The manufacturer part number is 1013831 and the OE/OEM part number is 431407183A. This bushing is a great replacement for the front inner control arm and comes with no manufacturer warranty. It is not a performance part and was made in Germany.