This sensor holder attaches to your bumper which can then hold a parking sensor. There is no part number for this from Volvo and cannot buy spares. It will fit parking sensor number 31341637. It was modelled from a holder found on a 2007 XC70 but could fit other P3 Volvos.
The holder relies on slight flex to allow the holder to hold the sensors ears in place. I recommend PETG to allow for that added flex without cracking at the layer lines.
Parking_Sensor_V3-PartHolder.stl | 190.0KB |