Heavy Duty 99160640701 ABS Wheel Speed Sensor Fit Porsche Cayman On a Cayman 718 (982) or a late 981, a single wheel-speed sensor taking a dump doesn't just light the ABS lamp — it trips the PSM, kills the traction control, and on PDK/AWD cars throws a "drive only rear wheels" message, because the control unit has lost one corner of its four-wheel picture. 99160640701 is the same sensor all four corners. Front or rear, left or right — one part number, four per car, sold