1986 Porsche Rear ABS Sensor Parts – Complete Guide to Finding the Right Replacement

If you own a 1986 Porsche—whether it’s a 944, 911 Carrera, or 928—the rear ABS sensor is a critical component for safe braking. When the sensor fails, the ABS light illuminates, and the system may disable itself. Finding the correct replacement part can be confusing due to different model variants and aftermarket options. This guide covers everything you need to know about 1986 Porsche rear ABS sensor parts, from part numbers to installation considerations.

Understanding the Rear ABS Sensor in Your 1986 Porsche

The anti-lock braking system (ABS) in a 1986 Porsche uses wheel speed sensors at each wheel to monitor rotation. The rear sensors are mounted on the trailing arm or hub carrier, picking up a signal from a toothed ring on the axle. When a sensor fails, it usually produces an intermittent or constant ABS warning light. Common symptoms include a pulsating brake pedal, loss of ABS function, or a stored fault code.

Why the Rear Sensor Is Different from Front

Front and rear ABS sensors on these Porsches are not interchangeable. The rear sensors are longer and have a different connector shape. For the 1986 model year, both the 944 and 911 used similar Bosch sensors, but the physical mounting and wiring differ. The 928 has its own unique sensor design. Always confirm compatibility with your specific chassis.

Identifying the Correct 1986 Porsche Rear ABS Sensor Part Number

To avoid buying the wrong part, you need the OEM part number. For a 1986 Porsche 944 (non-turbo and turbo), the factory rear ABS sensor part number is 944 606 231 00 (left rear) and 944 606 232 00 (right rear). For the 1986 911 Carrera (G-body), the part numbers are 911 606 231 00 (left) and 911 606 232 00 (right). The 1986 928 S4 uses 928 606 231 02 (left) and 928 606 232 02 (right).

Cross-Reference with Aftermarket Brands

Many aftermarket suppliers offer replacements that match these OEM numbers. Reputable brands include Bosch (OE supplier), VDO, Febi Bilstein, and Lemförder. When shopping, use the OEM part number to cross-reference. Avoid unbranded sensors—they often fail quickly due to poor wiring or incorrect air gap.

Where to Buy 1986 Porsche Rear ABS Sensor Parts

Since we are not mentioning marketplaces, focus on specialized Porsche parts retailers, local auto parts stores that carry European parts, or direct from a Porsche dealership. For example, parts suppliers like Pelican Parts, ECS Tuning, FCP Euro, and Sunset Porsche Parts stock genuine and OEM-quality sensors. Dealerships will have the highest price but guarantee fitment. Independent Porsche shops may also sell sensors directly.

What to Check Before Purchasing

• Connector type: Early 1986 cars used a 2-pin flat connector; later production switched to a round connector. Verify your car’s build date (before or after mid-1986).
• Cable length: Rear sensor cables are routed through the control arm; a too-short cable won’t reach the harness.
• Mounting bracket: Some sensors come with a metal bracket; ensure it matches your trailing arm design.

Installation Tips for the Rear ABS Sensor

Replacing a rear ABS sensor on a 1986 Porsche is a moderate DIY job. You’ll need basic hand tools, a jack, and jack stands. Here’s an overview:

1. Raise the vehicle and remove the rear wheel.
2. Disconnect the sensor connector in the engine bay or under the car near the trailing arm pivot.
3. Remove the bolt holding the sensor to the trailing arm. It’s usually an 8mm or 10mm hex head.
4. Pull the old sensor out carefully—if stuck, use penetrating oil and twist gently.
5. Insert the new sensor with a slight twisting motion until it seats against the tooth ring. The air gap should be about 0.3–0.8mm.
6. Reattach the bolt and route the cable away from moving parts.
7. Reconnect the wiring and test the system.

Common Pitfalls to Avoid

• Damaging the tooth ring: If the ring is rusted or chipped, the new sensor won’t read correctly. Inspect it and clean if needed.
• Incorrect air gap: A gap too large or small causes erratic signals. Use a feeler gauge if available.
• Wiring rub-through: Secure the cable with zip ties to prevent contact with the exhaust or suspension.

Choosing Between OEM and Aftermarket Sensors

OEM Porsche sensors (often made by Bosch) cost more but offer exact fitment and reliability. Aftermarket sensors from brands like VDO or Febi Bilstein are cheaper and generally reliable, but some reports indicate more variation in cable length or connector fit. If you plan to keep the car long-term, OEM is recommended. For a daily driver or track car, a quality aftermarket sensor works fine.

Warranty and Return Policy

Buy from a vendor that offers a warranty (e.g., 12 months). Sensors can be defective out of the box—test resistance between 1–2 kOhms before installation. A good return policy saves headache.

Final Recommendation for Your 1986 Porsche Rear ABS Sensor

To restore your ABS system correctly:

• Confirm your model and build date.
• Use the OEM part numbers listed above to order.
• Choose a reputable brand—Bosch for direct OE, or VDO/Febi for budget-friendly reliability.
• Purchase from a specialist Porsche parts supplier that provides fitment guidance.
• Follow the installation steps carefully, paying attention to air gap and cable routing.

If you are unsure about the correct part or installation, consult a Porsche specialist mechanic. A properly functioning ABS system is worth the investment for safety and resale value.