Wheel speed sensors are the eyes of your car's ABS and traction control systems, relaying real-time rotational data from each hub to the ECU so the system can modulate brake pressure in milliseconds. Positioned inside the wheel bearing housing or clipped to the hub carrier, they read a toothed reluctor ring as it spins past the sensing tip. Corrosion on that reluctor ring is one of the most common failure causes — road salt gradually pits the teeth until the signal drops out intermittently, triggering an ABS warning light or disabling stability control. A damaged wiring loom near the wheel arch is equally common, as the sensor cable flexes with every suspension cycle. VEMO and TRISCAN supply a high proportion of the original-equipment references used by European manufacturers, and their replacements carry the same OE numbers you'll find stamped on the outgoing sensor or listed in your vehicle's service record. Because the ABS ECU compares readings from all four corners simultaneously, a single faulty sensor throws off the whole system, meaning even a partial failure justifies prompt replacement. Matching the OE number guarantees the sensor's air gap tolerance and connector pinout are correct for your specific axle configuration.
Each sensor listed on this page is linked to specific vehicle chassis records in TecDoc, so you can confirm fitment by selecting your make, model, and year. Cross-reference the OE number against the part number moulded into your existing sensor or noted in your service history. The correct number ensures the connector type, cable length, and sensing technology (active Hall-effect versus passive inductive) match your vehicle's ABS control unit exactly, avoiding compatibility issues at installation.
OEM wheel speed sensors are produced to the vehicle manufacturer's specification, typically by suppliers such as VEMO or TRISCAN, and carry the original OE reference. Quality aftermarket sensors from brands like A.B.S. or MOBILETRON are manufactured to equivalent tolerances and are fully compatible with your car's ABS ECU. Budget replacements exist at lower price points but may use less robust connectors or inferior corrosion-resistant coatings, making them more susceptible to the salt and moisture exposure that typically causes original sensors to fail.
Unlike brake pads or shock absorbers, wheel speed sensors are generally replaced individually rather than in axle pairs. Each sensor functions independently, so a single failed unit can be swapped without affecting its counterpart. That said, if your car has high mileage and one sensor on an axle has corroded, it is worth inspecting the opposite side at the same time, as sensors age in similar conditions and a second failure shortly after the first is not uncommon.
The clearest warning is an ABS dashboard light, often accompanied by traction control or stability control alerts, because the ECU detects an implausible or absent signal from one corner. You may also notice the ABS activating unnecessarily on dry roads, or the system failing to engage in a genuine emergency stop. Some drivers report a brief judder as the car moves off, caused by the traction system misreading wheel slip. In severe cases the speedometer reading can become erratic if the instrument cluster shares the same sensor signal.
Showing 100 of 20,038 Wheel speed sensor OE numbers. Enter the OE on the main OE search to jump to any reference.
