Genuine OEM Audi brake pad wear sensor, part number 420615437B. This sensor monitors the thickness of the brake friction material and triggers a warning light on the dashboard when the pads reach their service limit. It is located within the brake caliper assembly. Genuine OEM sensors are essential for this application as they are calibrated to provide the exact electrical resistance and signal characteristics required by the vehicle braking system to ensure accurate wear detection.

Catalogue entry: SENDER ×X; for vehicles with brake pad.

Fitted with: N91141801 SCREW, 420698269C FIX. SET, 4S0615601A BRAKEDISC, 4S0615601C BRAKEDISC, 4S0615602A BRAKEDISC, 4S0615602B BRAKEDISC, N10648301 BOLT, 4S0698451J BR. LINING, 4S0698451AF BR. LINING, 4S0698451Q BR. LINING, 4S0698451AG BR. LINING, G052150A2 GREASE.