The plastic sensor, a set of replacement parts that are very suitable for the factory. All sensors are strictly tested and assembled, to ensure the connectivity of the installation. Manufactured according to specifications, matched to the car, easy to install. TYPE: Wheel Speed Sensor Replacement for Part Number: 52125003AB, ALS1932, SU9956, 695-179 1. Product Function: ABS speed sensors are located at each wheel, monitoring wheel rotation, provide speed information for the anti-lock braking module. Provide the same performance as your vehicle, as well as the function and performance to recover from a wheel speed sensor failure. When braking, maintain the directional stability of the car as much as possible, can overcome the side skid, deviation and tail strike of emergency braking. 2. About the fault: When your sensor fails to turn on the ABS warning light or fault light, it may cause the anti-lock brake to fail, the system cannot work safely and normally, and the car loses traction