This alloy tube is fitted with an alloy boss to accept the MAP sensors, as found on VAG vehicles. The housing will fit the larger and smaller sensors, by using the size reducer supplied. This tube is NOT a direct replacement for any particular vehicle, even thoughit may appear in a specific vehicle listing. It is for those who are constructing a custom installation. It is available in a choice of 60mm or 63mm outside diameter and 110mm or 240mm tube length. These are selectable in the options below.