This rear axle ABS sensor is an essential electronic component of the truck anti-lock braking system. It collects wheel speed signals in real time and transmits accurate data to the ABS ECU to prevent wheel lockup during emergency braking and improve driving safety. The sensor features a high-precision induction chip and fully sealed waterproof housing to withstand vibration, dust and splashing water in harsh working conditions. Every ABS sensor undergoes signal acquisition and durability testing before shipment. It fixes common faults including ABS warning light on and signal loss, and it is a key replacement spare part for truck brake system maintenance.