Rear PDC Sensor Mounting Bracket 51123402839

Ensure accurate parking distance control performance with the genuine PDC rear sensor mounting bracket (part 51 12 3 402 839). Engineered to BMW’s stringent OEM standards, this bracket provides a stable, vibration-free platform for the rear ultrasonic sensor, maintaining precise alignment and reliable obstacle detection.

Key Benefits

• Exact OEM Fit
  Manufactured to BMW CAD specifications for drop-in replacement—no trimming or adapters required.

• High-Strength Steel Construction
  Stamped alloy steel resists bending and fatigue, keeping the sensor firmly in position under all driving conditions.

• Corrosion-Resistant Finish
  E-coated or zinc-plated surface protects against moisture, road salt and environmental exposure.

• Optimal Sensor Alignment
  Precision mounting points ensure the ultrasonic sensor maintains factory-calibrated angle and distance, preserving detection accuracy.

• Quick Installation
  Secures with original mounting hardware; installs in minutes using standard BMW fasteners and tools.

Technical Specifications

• Part Number: 51 12 3 402 839

• Material: High-strength stamped steel

• Finish: Electrophoretic or zinc corrosion protection

• Mounting Style: Bolt-on bracket with locating tabs for sensor housing

• Compatibility: Fits rear bumper PDC systems on select BMW models; verify via VIN or parts catalog

• Operating Temperature: –40 °C … +85 °C

• Warranty: 24 months genuine-parts coverage

Installation Overview

1. Access Rear Bumper Area: Safely lift the vehicle and remove the rear bumper trim to expose the PDC sensor housing.

2. Remove Old Bracket: Unbolt the existing bracket and detach the sensor module.

3. Inspect Mounting Points: Clean and inspect mounting bosses for damage or corrosion.

4. Fit New Bracket: Align the new bracket’s tabs and bolt holes with the factory bosses.

5. Secure Sensor: Reinstall the PDC sensor into the bracket, then torque bolts to BMW specification.

6. Reassemble Bumper: Replace bumper trim, reconnect any electrical connectors, and test sensor operation via the vehicle’s diagnostics.