Genuine OEM BMW Brake Fluid Level Sensor. This is the float-style switch that sits inside the master cylinder reservoir. It is responsible for triggering the "Brake" warning light on your dashboard if your fluid levels drop too low.
Condition: Tested: Float moves freely on the shaft and the internal switch has been verified for continuity. Physical: Clean plastic housing. No staining or degradation from old brake fluid. The 2-pin electrical connector is in perfect condition with no corrosion.
Vehicle Fitment: Fits a wide range of BMWs from the late 90s through the mid-2000s: 3 Series: E46 (323i, 325i, 328i, 330i, M3) – All years. Z Series: E85 / E86 Z4 and E36/7 Z3. 5 Series: E39 (Certain production years).
Buyer’s Tip: If your brake warning light is flickering even though your fluid is full, this sensor is the most likely cause of the "ghost" light. This is a 5-minute DIY swap.
To ensure quality and prevent part-swapping, this item has been inconspicuously marked and the unique serial/date codes have been recorded. Returns must have original markings intact to qualify for a refund.