Brake Lining Wear Indicator 21390376 Volvo

This Brake Pad Wear Sensor is a core monitoring component of the braking system for Volvo trucks and buses, installed near the brake caliper or brake pads on the left side. Its primary function is to monitor brake pad wear in real time - when the pad reaches its wear limit, the sensor circuit opens or resistance changes, triggering a brake warning light on the dashboard to alert the driver to replace the pads, preventing rotor damage and costly unscheduled downtime.

The product is built to OEM-grade durability, designed to withstand extreme temperatures and environmental conditions common in heavy-duty transport. The sensor features a 3-pin electrical connector, a cable length of approximately 1930mm (or 1820mm), and a weight of about 129g. Its plug-and-play design ensures perfect fitment into existing mounts and connectors without modification. Mounting dimensions and interfaces strictly follow original specifications for direct replacement.