Arrangement for a fuel delivery system for a motor vehicle, having a housing and having a high-pressure connector for fixing to the housing by way of a welding process, - wherein the housing comprises a wall which has a connector opening, - wherein the high-pressure connector has a wall circumferentially bordering a recess which leads through the high-pressure connector, along a longitudinal central axis in the high-pressure connector, - wherein the high-pressure connector has a housing connector region, an intermediate region and a transition region formed between the housing connector region and the intermediate region, wherein a main direction of extent of the transition region is arranged perpendicular to the longitudinal central axis, wherein, in cross-sectional planes perpendicular to the longitudinal central axis, the outer contour of the high-pressure connector is larger in the housing connector region than in the intermediate region and, in cross-sectional planes perpendicular to the longitudinal central axis, the inner contour is larger in the housing connector region than in the intermediate region, - wherein a radial indentation is formed at the inner side in the wall in the housing connector region, adjacent to the transition region, characterized in that - the wall of the housing delimits, at its outer side, a recess which runs along a circumferential direction around the connector opening, and the housing connector region has a protruding region which is suitable for making contact with the housing when said protruding region partially or fully enters the recess, - and in that an axial indentation is formed at the outer side in the wall in the transition region, adjacent to the intermediate region. - wherein the housing comprises a wall which has a connector opening, - wherein the high-pressure connector has a wall circumferentially bordering a recess which leads through the high-pressure connector, along a longitudinal central axis in the high-pressure connector, - wherein the high-pressure connector has a housing connector region, an intermediate region and a transition region formed between the housing connector region and the intermediate region, wherein a main direction of extent of the transition region is arranged perpendicular to the longitudinal central axis, wherein, in cross-sectional planes perpendicular to the longitudinal central axis, the outer contour of the high-pressure connector is larger in the housing connector region than in the intermediate region and, in cross-sectional planes perpendicular to the longitudinal central axis, the inner contour is larger in the housing connector region than in the intermediate region, - wherein a radial indentation is formed at the inner side in the wall in the housing connector region, adjacent to the transition region, characterized in that - the wall of the housing delimits, at its outer side, a recess which runs along a circumferential direction around the connector opening, and the housing connector region has a protruding region which is suitable for making contact with the housing when said protruding region partially or fully enters the recess, - and in that an axial indentation is formed at the outer side in the wall in the transition region, adjacent to the intermediate region.