OBD Protector.
  This is a quality product manufactured in Italy by Defender. The reinforced steel will protect against thieves wishing to access the OBD port to start the engine and make off with the car. The lock is built to an anti drill specification. There is also an option to add a tracker which fits neatly into the case.( requires a data-only sim card ).This will fit most cars , you just need the space . The case measures 10cm x 6cm x 4cm.