Facet 21.2123 ABS Wheel Speed Sensor - Front Left or Front Right

Reliable ABS Wheel Speed Sensor for Audi A4, A4 Quattro, and S4

The Facet 21.2123 ABS wheel speed sensor is designed specifically for Audi A4, A4 Quattro, and S4 models. Engineered to provide accurate wheel speed data, this sensor supports your vehicle's anti-lock braking system for enhanced safety and performance.

• Cable length: 1000 mm for flexible installation
• Sensor length: 28 mm ensuring precise fitment
• Resistance between terminals: 1650 ohm for reliable signal transmission
• Compatible with Audi A4, A4 Quattro, and S4 models
• Part number: 21.2123 for easy identification and ordering

Technical Details and Specifications

The Facet 21.2123 ABS wheel speed sensor features a 1000 mm cable length, allowing for straightforward routing and connection within the wheel assembly. The sensor itself measures 28 mm in length, designed to fit securely in the designated mounting location on Audi A4, A4 Quattro, and S4 vehicles. With a resistance of 1650 ohms between terminals, this sensor ensures consistent electrical performance, providing accurate wheel speed data to the vehicle's ABS control module.

Compatible Vehicles and Applications

This ABS wheel speed sensor is compatible with the following Audi models:

• Audi A4
• Audi A4 Quattro
• Audi S4

It is intended for use in the anti-lock braking system to monitor wheel speed and help prevent wheel lockup during braking.

Common Issues Addressed by the Facet 21.2123 Sensor

• Intermittent ABS warning lights due to faulty sensor signals
• Erratic or inaccurate wheel speed readings affecting braking performance
• ABS system malfunction caused by damaged or worn sensors
• Loss of traction control responsiveness linked to sensor failure
• Inconsistent braking behavior during emergency stops

Installation Notes and Tips

When installing the Facet 21.2123 ABS wheel speed sensor, ensure the sensor and cable are routed without sharp bends or kinks to avoid damage. Verify the sensor length of 28 mm fits securely in the mounting bracket. Check the resistance between terminals to confirm sensor integrity before installation. Use appropriate tools to avoid damaging the sensor or connector during replacement. Always disconnect the vehicle battery before beginning installation to prevent electrical shorts.

Quality Assurance and Warranty Information

Facet manufactures the 21.2123 ABS wheel speed sensor to meet OEM specifications for fit, form, and function. Each sensor undergoes rigorous testing to ensure electrical resistance and durability standards are met. While specific warranty details may vary, Facet products typically include a limited warranty against defects in materials and workmanship. Consult product documentation or supplier information for exact warranty terms.