Fitment: 2007-2012 Dodge Caliber 2007-2017 Jeep Compass 2007-2017 Jeep Patriot Item Description: Fits LH (Driver Side) And RH (Passenger side) Front Brand New ABS speed sensor Direct replacement Built to strict quality control standards What is ABS sensor? An anti-lock braking system (ABS) is a vehicle safety system that allows the wheels of a car to maintain tractive contact with the road surface while braking, preventing the wheels from locking up (ceasing rotation) and avoiding uncontrolled skidding. It is an automated system that uses the principles of cadence braking. .