Hella 012806171 ABS Wheel Speed Sensor - Front Left or Front Right

Hella ABS Wheel Speed Sensor for Audi A4 and S4

Restore accurate wheel speed signal input with the Hella ABS Wheel Speed Sensor, part number 012806171. This 12-volt sensor is built with a 950 mm cable length for front axle applications on select Audi A4, A4 Quattro, S4, and RS4 models.

Key Features

• ABS wheel speed sensor for front right and front left positions
• 950 mm cable length for proper routing on the front axle
• 12 V rated electrical specification
• Direct-fit application coverage for select 2004-2009 Audi models
• Hella part number 012806171 for catalog and service matching

Product Details

The Hella 012806171 ABS Wheel Speed Sensor monitors wheel rotation and sends the signal used by the ABS system to manage braking control. It is listed for 2004-2009 Audi A4, 2004-2009 Audi A4 Quattro, 2004-2009 Audi S4, and 2007-2008 Audi RS4 in front right and front left positions. This part cross-references Delphi SS20197 and Standard Ignition ALS448 for the same application.

Hella is a recognized automotive electronics brand with OE-focused sensor coverage. For buyers searching for an ABS wheel speed sensor for Audi A4 front left, Audi A4 front right, or an Audi S4 ABS sensor replacement, part number 012806171 provides a catalog-matched solution for the listed vehicles.

What It Helps Address

• ABS warning light caused by a failed wheel speed sensor
• Erratic or missing wheel speed signal data
• Brake control faults related to front axle sensor input
• Loss of ABS system response during braking events
• Diagnostic trouble codes tied to front wheel speed monitoring

Installation Notes and Tips

Verify the vehicle year, model, and sensor position before ordering. Confirm the 950 mm cable length matches the original routing and connector layout on the front right or front left side. Inspect the tone ring, hub area, and wiring path during replacement to avoid repeat faults. Use the vehicle’s service information for proper sensor seating and connector engagement.

Quality Assurance

Hella manufactures automotive electrical components with application-specific fitment data for service replacement. Part number 012806171 is cataloged for the listed Audi applications and electrical specification.