Brand new GENUINE GM Vauxhall air flow meter. Part numbers on the unit are 55353813 and 93185443. According to Vauxhall they are fitted to some: Astra MK5 - Z18XER and A18XER Zafira B - Z16XEP Z16XER A16XER Z18XER A18XER Vectra C + Signum - Z18XE Z18XEL Will only work on the above models if the part number matches. Please check that yours has 55353813 and 93185443. Price includes delivery via Royal Mail