ABS wheel speed sensor

An ABS wheel speed sensor tracks how fast each wheel is turning and sends that data to the anti-lock braking system to stop the wheels from locking under hard braking. It usually works with a toothed ring and comes in either passive or active types.The moment one wheel slows faster than the others under braking, the ABS uses these readings to release and reapply the brake so the wheel doesn't lock and skid. Mounted right by the hub, the sensor lives in a filthy environment of road spray, salt, and brake dust, so corrosion and damaged wiring are common ways it fails.When a sensor stops reporting, the car loses ABS and often traction and stability control with it, falling back on plain unassisted braking. With a failed ABS sensor the brakes still work, but the anti-lock system is offline, so the wheels can lock and skid in an emergency stop or on a wet road. Signs a sensor needs replacing:

• The ABS warning light on: The clearest sign, usually with a stored wheel-speed fault code.
• ABS and traction lights together: A failed sensor often takes the stability system down too.
• The speedometer reading erratically: On many cars, the sensor also feeds the speed reading.
• ABS cutting in when it shouldn't: A dirty or failing sensor sends false readings.
• A pulsing pedal on normal braking: The system is reacting to a bad signal.
• Cruise control dropping out: Often disabled when wheel-speed data is lost.

A used or aftermarket ABS sensor is a fraction of the dealer price, but the listings are scattered over a long list of separate sites.Parthunt24 collects used ABS wheel speed sensor listings from marketplaces like Ovoko, ProxyParts, eBay, and TotalParts, setting 370 options next to each other on price, condition, and fitment before you choose a seller.

ABS sensors are precise about fit, since they're tied to a specific wheel, axle, and wiring layout. A front sensor won't suit the rear, the left and right are often different parts, and the connector has to match your loom exactly.Match the OEM number first, then check whether your car runs an active or passive sensor, since the two work differently, and confirm the cable length and mounting bracket line up with what you're removing.Drop your make and model into Parthunt24 and the results shrink to sensors made for your car. Each listing takes you to the marketplace that holds it, where the seller's full description and the checkout sit together.

• Vehicle compatibility: Match the make, model, year, engine, and OEM part number.
• Front or rear axle: ABS sensors are often specific to the front or rear axle.
• Left or right side: Many vehicles use side-specific sensors.
• OEM part number: The most reliable method of confirming compatibility.
• Connector type: Electrical connectors must match the vehicle’s wiring harness.
• Cable length: Sensor-harness length varies between mounting positions and vehicle models.
• Active vs. passive sensor: Different ABS systems use different sensor technologies.
• Mounting design: Verify the mounting bracket and bolt configuration.
• ABS ring compatibility: The sensor must work with the vehicle’s tone-ring design.
• ABS/ESP system compatibility: Sensors may differ depending on the braking and stability-control systems.
• Condition: Inspect for damaged wiring, cracked housings, or corrosion.

On the seller's page, the wiring and connector tell you most of what you need, since that's where these sensors usually give out. A cracked housing or a frayed cable near the connector means the sensor is failing, so those areas need a clear close-up, not just a shot of the tip.

• Photos: The sensor tip, the full cable, the connector, and the mounting point.
• Seller reputation: Their feedback score, recent reviews, and time on the platform.
• Compatibility: OEM number, axle, and side matched to your car.
• Included components: Sensor only, or with bracket, clips, and connector pigtail?
• Condition: Cracked housing, frayed or repaired cable, corroded connector pins.
• Testing: Confirmation the sensor reads correctly on the donor car before removal.
• Warranty and returns: A clear policy if the sensor arrives faulty.
• Shipping: The cable is coiled loosely and the tip is protected, so nothing is bent.
• Documentation: The car it came off, plus evidence of a careful removal.

If the cable and connector check out, you can buy the sensor on the seller's marketplace.

What you pay for an ABS wheel speed sensor turns on the car, the brand, and whether it's an active or passive type. A used sensor for a common car runs around €8-€25, an OEM or active-type sensor sits at €25-€70, and sensors for premium or recent models can climb past €110.ABS sensor prices on Parthunt24 begin at 5.00.Here's what sets one ABS wheel speed sensor price above another:

• Sensor type: Active sensors usually cost more than older passive ones.
• Brand: OEM-supplied sensors sit above unbranded aftermarket units.
• Position: Some axle and side variants are scarcer and dearer.
• Model rarity: Common cars stay cheap; rare or recent models cost more.
• Condition: A clean, undamaged sensor with intact wiring takes the higher price.

A quick price sort on Parthunt24 shows which seller has the cheapest ABS wheel speed sensor for your car.

An ABS fault doesn't always trace back to the sensor itself, since the whole system relies on a clean signal and an undamaged tone ring. A corroded tone ring or a worn hub bearing throws the same fault as a dead sensor, so it's worth checking the parts around it before blaming the sensor.Browse these on Parthunt24:

• Wheel hub: The tone ring is often built into the hub, so check it for rust or damage.
• ABS pump: The hydraulic unit that acts on the sensor's readings.
• Wiring harness: Chafed wiring to the sensor throws the same codes as a dead sensor.
• Wheel ball bearing: Play in the bearing upsets the sensor-to-ring gap.
• Wheel hub bearing: Often carries the tone ring on sealed-bearing designs.
• Tone ring: A cracked or clogged ring gives the sensor nothing clean to read.
• Brake discs: Worth checking while the hub is apart for the sensor.

With so many near-identical sensors differing only by axle, side, or connector, it's easy to order the wrong one across scattered sites, and easier still to overpay. Parthunt24 brings the major used-parts marketplaces onto one page, with the type, condition, and price shown against every ABS wheel speed sensor in the results, including Bosch units and other OEM-grade parts across European cars.Compare every seller's sensor in one place and the cheapest working one is easy to find. Compare prices, find the best deal, and buy an ABS wheel speed sensor for your car today on Parthunt24.