VAUXHALL ASTRA G MK4 BRAKE SERVO & MASTER CYLINDER. Part number: 90 49 80 35. You can also order through our website www.goldstarcommercials.co.uk for £66.00 with free next working day delivery to UK Mainland excluding The Scottish Highlands.Please check the part number against the item you are replacing for compatibility before purchasing. For any questions or for further assistance please contact Goldstar Commercials