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ABS | Speed Sensors
By OE Match
- Porsche Boxster 986 2.5L 1997-99
- Porsche Boxster 986 2.7L 1999-02
- Porsche Boxster S 986 3.2L 1999-02
- Porsche Boxster 986 2.7L 2003-04
- Porsche Boxster S 986 3.2L 2003-04
- Porsche 996 C2 3.4L 1997-08/01
- Porsche 996 C4 3.4L 1997-08/01
- Porsche 996 C2 3.6L 09/01-2005
- Porsche 996 C4 3.6L 09/01-2005
- Porsche 996 C4S 3.6L 09/01-2005
- Porsche 996 TURBO 2000-05
- Porsche 996 GT2 2001-05
- Porsche 996 GT3 MKI 1999-02
The product code ref no, 99660640600 or Bosch ref No 0 265 006 344 refers to a ABS wheel speed sensor. This is a key component of your vehicle’s anti-lock braking system (ABS). Its primary function is to monitor the rotational speed of each wheel, providing precise data to the ABS control module. Most vehicles equipped with ABS have four wheel speed sensors—one at each wheel. This product fits front or rear, left or right sides
These sensors not only help prevent wheel lock-up during braking but also supply essential data for systems such as traction control and electronic stability control (ESC).
Left or Right side
Porsche 996 1998-2001 without PSM
Porsche 996 2001-2004 with PSM
Porsche 986 Boxster 1997-2001 without PSM
Porsche 986 Boxster 2001-2004 with PSM
How the Wheel Speed Sensor Works
The wheel speed sensor detects wheel speed using a reluctor wheel or magnetic pickup located near the wheel hub. Depending on the vehicle’s design, the reluctor may be integrated into the wheel bearing, hub, or axle assembly.
Because of this integration, a faulty wheel bearing can sometimes trigger an ABS warning light or fault code. For this reason, it’s important to perform a complete diagnostic check of the ABS system and related components before carrying out repairs.
Replacement and Repair
On some vehicles, the ABS wheel speed sensor can be replaced individually as a standalone component. In other cases, it may be built into the wheel hub assembly, requiring replacement of the entire unit.
A failed wheel speed sensor will disable the ABS system and can also affect other safety features like traction control and stability control, potentially compromising overall vehicle safety.
ABS Wheel Speed Sensor Failure Symptoms
- ABS light illuminated on instrument cluster
- Stability and traction control not functional
- ABS non-functioning
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99660640600
The product you are viewing cross references to these numbers
OEMatch ABS | Speed Sensors — Stopping Power, Consistent Control
OEMatch supplies ABS speed sensors for Porsche models, selected for repair, restoration and routine maintenance of wheel-speed detection systems. These sensors monitor wheel rotation to support ABS and traction control, and correct fitment helps ensure reliable signal transmission to the vehicle’s control modules.
Available Types
- Passive inductive wheel-speed sensors
- Active Hall-effect wheel-speed sensors
- Sensor rings and tone-wheel assemblies
Understanding OEMatch ABS | Speed Sensors
OEM (Original Equipment Manufacturer) parts are made by the same company that produced your Porsche’s original ABS speed sensors. OE (Original Equipment) refers to parts matching original specifications for the abs speed sensors and may be supplied by alternative manufacturers. Aftermarket parts offer alternative options, sometimes with enhanced features or better value. OEMatch supplies non-OEM abs speed sensors engineered as direct-fit alternatives to OEM parts, made to original-spec dimensions and tolerances for Porsche models. Wheel-speed sensors detect rotational speed at each wheel and send a signal to the ABS and stability control modules; their proximity to the hub exposes them to heat, moisture and road debris. OEMatch provides a wide selection of Porsche parts and catalogues many cross-referenced part numbers to support repairs and restorations.
Benefits Include
- Restores accurate wheel-speed data for ABS and traction systems
- Helps prevent erroneous warnings and reduces unwanted intervention
- Supports consistent braking behaviour and vehicle stability
Why ABS | Speed Sensors Wear and Fail
- Corrosion and contamination from salt, dirt or moisture impair sensor elements
- Physical damage from road debris or impact to the sensor or wiring
- Electrical faults such as connector corrosion, wiring fatigue or short circuits
The Importance of Replacing with OEMatch ABS | Speed Sensors
Replacing degraded sensors restores correct input to the vehicle control units and helps maintain the intended operation of ABS and stability systems. Correctly matched sensors reduce diagnostic uncertainty, protect braking performance and contribute to safer vehicle handling, particularly in low-grip conditions.
Advantages
- Made to original-spec dimensions for consistent fit and signal alignment
- Designed to resist heat and corrosion in wheel-end environments
- Compatible with factory wiring and control systems where specified
Support & Advice
These items affect safety-critical systems. Installation should be carried out by a qualified technician following model-specific procedures and torque settings. Use calibrated tools and new fasteners where specified and recheck fasteners after initial mileage.
