Description

Buy O/S Front Speed Sensor (ABS) – 1J0927804 in the US

Product Overview

The offside (O/S) front Anti-lock Braking System (ABS) speed sensor—identified by the official factory part number 1J0927804—is a safety-critical electronic component located on the right-hand side wheel hub assembly (driver’s side on US right-hand drive models). Operating as a key data input for the vehicle’s electronic control units, this genuine Volkswagen sensor constantly measures the rotational velocity of the front right wheel.

As an authentic OEM (Original Equipment Manufacturer) component, it guarantees exact electrical impedance, accurate sensor-to-ring gaps, and seamless communication with your vehicle’s safety networks. Whether you are an independent garage replacing a faulty sensor to clear an MOT dashboard warning, a fleet manager maintaining road safety, or a DIY enthusiast completing routine vehicle servicing, installing a genuine factory sensor restores your braking performance and driving confidence.

Compatibility & Fitment

Exact automotive fitment is critical when purchasing electronic safety sensors to avoid calibration errors or mismatched wiring harness plugs. This specific part number is designed for several highly popular vehicle platforms built on the historic Volkswagen Group A4 (PQ34) chassis architecture, alongside select overlapping model ranges.

• OEM Part Number Reference: 1J0927804 (Also written as 1J0 927 804)

• Placement on Vehicle: Front Axle, Right-Hand Side (Offside / Driver Side US)

• Sensor Type: Active / Passive Magnetic Inductor (Depending on exact model year application)

Compatible Volkswagen Models:

• Golf: MK4 variants (Hatchback and Estate, including GTI, GTD, and R32 models spanning 1997–2004)

• Bora: All saloon and estate variants (spanning 1999–2005)

• Polo: Select 9N/9N3 platform generations (spanning 2002–2009)

• Beetle: First-generation modern A4 platform models (spanning 1998–2010)

• Fox / Sharan: Select model years and specific chassis configurations (Always check chassis prefix)

Important Fitment Check: Variations in braking packages (such as varying brake disc diameters or 4Motion all-wheel-drive configurations) can alter localized wheel hub spacing. To ensure absolute compatibility with your vehicle, always cross-reference your full vehicle identification number (VIN) or vehicle registration plate against the factory part number 1J0927804 before placing your order.

How It Works

The front wheel speed sensor is positioned directly adjacent to a slotted or magnetic reluctor ring attached to the rotating front wheel hub or outer CV joint assembly. As the wheel spins, the slots or magnetic poles pass the tip of the 1J0927804 sensor, creating a shifting magnetic field that the sensor translates into a precise digital frequency signal.

This live data stream is continuously monitored by the central ABS module, which compares the speeds of all four wheels. If the control unit detects a wheel locking up during emergency braking, it instantly modulates hydraulic brake fluid pressure to that wheel, preventing skidding and allowing the driver to retain steering control.

Because they are positioned open to the elements behind the brake disc, wheel speed sensors operate in a very harsh environment. Common wear indicators and failing symptoms include:

• The ABS warning light illuminating permanently on the dashboard.

• The Traction Control / Electronic Stability Programme (ESP) warning light switching on.

• Unpredictable or intrusive ABS brake pedal “pulsing” sensations during normal, low-speed braking on dry roads.

• Loss of speed-dependent power steering assistance or erratic speedometer readouts.

Performance Benefits

• Restored Braking Control: Allows the ABS module to operate flawlessly, preventing dangerous wheel lockup on wet, icy, or greasy US road surfaces.

• Flawless MOT Compliance: Clears safety-critical dashboard warning lights, avoiding an immediate, automatic fail during the annual MOT test.

• Integrated Safety Systems: Restores full operation to dependent electronic systems, including Traction Control (ASR) and Electronic Stability Programme (ESP).

• Precise Signal Transmission: Factory-calibrated internal resistance eliminates electrical “noise” and data corruption across the wiring harness.

• All-Weather Resilience: Advanced outer casings protect delicate internal wiring against heavy rain, deep puddles, flying road grit, and winter grime.

Build Quality & Engineering

Volkswagen OEM-grade electronic components are built to survive harsh underbody environments that low-cost aftermarket alternatives cannot endure. The body of the 1J0927804 sensor is molded from premium, high-density glass-fiber reinforced polymers that isolate internal circuits from heavy engine bay thermal cycling and extreme brake assembly heat.

The electrical connection terminal pins are plated to resist oxidation and moisture ingress. At the same time, the high-flexibility rubberized wiring sheath resists cracking or hardening across thousands of suspension travel strokes, ensuring reliable performance over years of operation.

Installation & Maintenance

Replacing an offside front wheel speed sensor is an accessible beginner-to-intermediate DIY repair or standard workshop procedure that requires basic mechanical hand tools.

1. Loosen the offside front wheel bolts, raise the front of the vehicle safely using a certified jack and heavy-duty axle stands, and remove the wheel.

2. Locate the sensor mounted vertically behind the brake caliper into the rear face of the steering knuckle.

3. Carefully trace the attached wiring cable up to the inner wheel arch liner, unclip it from its mounting brackets, and depress the locking tab on the factory wiring loom plug to disconnect it.

4. Remove the single Allen retaining bolt holding the old sensor body into the knuckle. (Note: Due to road salt exposure, old sensors can become corroded in place; a penetrating fluid and careful twisting may be necessary to extract it).

5. Thoroughly clean out the sensor mounting bore using a small wire brush or emery cloth to remove rust scaling and debris. Failing to clean this area can alter the sensor gap, leading to immediate fault codes.

6. Slide the new 1J0927804 sensor into the bore, secure it with the mounting bolt, route the cable along the factory chassis clips, and plug in the electrical connector until it clicks into place.

7. Remount the wheel, lower the vehicle, and drive a short distance—the ABS dashboard warning light should clear automatically once the module registers a clean wheel speed signal.

Durability & Storage

Our genuine Volkswagen electronic sensor inventory is stored in strictly climate-controlled, dry distribution facilities. This prevents any moisture contamination or pin oxidation prior to installation. Packaged securely within anti-static protection sleeves inside rigid original cardboard boxes, the sensors are fully shielded from accidental crush or drop damage during courier transit, arriving at your door workshop-ready.

Trust & Authenticity

When dealing with safety-critical electronics like ABS sensors, cheap unbranded components are notorious for causing issues. Budget sensors often feature incorrect internal resistance ratings that trigger immediate dashboard warning lights, or fail prematurely when exposed to heavy rain.

At Volkswagen Parts US, we focus purely on authentic, original equipment components. Purchasing a genuine 1J0927804 ensures you receive a factory-tested component backed by a secure checkout interface, highly competitive pricing, rapid delivery across the US, and direct access to knowledgeable customer support.

Why Choose Volkswagen Parts US for 1J0927804

• 100% Genuine VW Spares: Never worry about counterfeit parts; we source original factory inventory.

• Perfect Electrical Compatibility: Interfaces flawlessly with your factory wiring loom and ABS computer with no reprogramming required.

• Competitive US Pricing: Dealership-level quality provided at competitive rates for US car owners and trade operations.

• High Stock Availability: Maintained consistently in our centralized US warehouse to prevent long backorder delays.

• Trusted Industry Partner: Relied upon daily by independent garages, mechanics, and Volkswagen enthusiasts nationwide.

Fast Delivery Across the US

A faulty ABS sensor compromises your vehicle’s braking safety. That is why we offer rapid, fully trackable nationwide shipping throughout California, San Diego, Dallas, and Florida to get your replacement to you as quickly as possible.

We offer reliable courier delivery directly to homes, businesses, and workshops in major US towns and cities, including:

• New York

• Los Angeles

• Chicago

• Texas

• Houston

• Phoenix

• Philadelphia

• Florida

• North Carolina

• Illinois

• Pennsylvania

• Georgia

• Georgia,

• Michigan

• Ohio

Expect real-time dispatch alerts and live tracking links provided straight to your email inbox for complete transparency from our door to yours.

Genuine Volkswagen Parts for US Drivers

Sourcing authentic parts protects your vehicle’s mechanical integrity, structural safety, and long-term resale value. Genuine electronics guarantee proper voltage readings across your factory wiring loom, reducing the risk of dashboard warning lights, blown fuses, or faulty module warnings. Maintain your vehicle’s factory operation parameters by choosing components engineered specifically for US driving conditions.

FAQ Section

Q: Is this a genuine Volkswagen part? A: Yes. This is a 100% brand-new, authentic OEM Volkswagen factory component. It features official factory stampings and matches the exact material and electronic specifications used during original vehicle assembly.

Q: Will this sensor clear my ABS light automatically? A: On most compatible Volkswagen platforms, once the new sensor is installed and the vehicle is driven above approximately 10 mph, the ABS module will detect a valid signal and clear the dashboard warning light automatically. If the light stays on, the fault code may require resetting via an OBD2 diagnostic tool, or a faulty reluctor ring may be present.

Q: How do I confirm compatibility with my Volkswagen? A: The safest method is matching the part number 1J0927804 directly against your old part or checking your vehicle’s VIN. You can also provide your registration to our expert support team to verify fitment before checking out.

Q: Do you ship across the US? A: Yes. We provide fast nationwide shipping options across California, San Diego, Dallas, and Florida using our trusted domestic courier networks.

Q: What if I order the wrong part? A: We offer a straightforward returns process for uninstalled components kept in their original, undamaged packaging. Simply contact our customer service team, and we will gladly help you handle the return or exchange.