This Apec wheel cylinder fits the rear right brake of a Peugeot 207 1.4D model from 2006 onwards. Made of grey cast iron with a piston diameter of 21mm and a thread size of 12x1, it comes with an integrated regulator. This wheel brake cylinder is a genuine Peugeot part with the manufacturer part number 9248397RMP. It is designed for the Bendix brake system and is compatible with various brake brands and models, including Brembo, Delphi, and Bosch. Additionally, it is recommended to use the part numbers BBS3 and BSC1 for the installation of this wheel cylinder.