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Brake Pad Wear Sensors
By OE Match
- Porsche Boxster 987 2.7L 2005-08/08
- Porsche Boxster 987 MKII 2.9L 2009-12
- Porsche Cayman 2.7L 987C 2006-08
- Porsche Cayman 2.9L 987C MKII 2009-12
Rear Brake Pad Wear Sensor
Sold each
Maintain the safety, reliability and performance of your
Porsche braking system with this OE Match Rear Brake Pad Wear Sensor. Designed specifically for Porsche 987.1 and 987.2 Boxster and
Cayman models, this sensor forms an essential part of the factory brake wear
monitoring system, providing an early warning when rear brake pads approach
their minimum service thickness.
Fits:
- Porsche Boxster 987 2.7L 2005-08/08
- Porsche Boxster 987 MKII 2.9L 2009-12
- Porsche Cayman 2.7L 987C 2006-08
- Porsche Cayman 2.9L 987C MKII 2009-12
Mounted within the rear brake pad assembly, the sensor continuously monitors brake pad wear and alerts the driver via the dashboard warning system when replacement is required. This helps prevent excessive brake pad wear, protects expensive brake discs and ensures the braking system continues to perform as Porsche intended.
Whether used on a daily-driven Boxster, a Cayman road car or a track-focused build, maintaining the brake wear monitoring system helps ensure optimum braking performance and safety.
What Does a Brake Pad Wear Sensor Do?
The brake pad wear sensor is designed to monitor the remaining thickness of the brake pad friction material.
As the brake pad wears down, the sensor eventually contacts the brake disc and completes an electrical circuit that activates the brake wear warning light on the dashboard.
A properly functioning sensor helps:
- Monitor brake pad condition
- Provide early brake wear warnings
- Prevent excessive brake pad wear
- Protect brake discs from damage
- Improve maintenance planning
- Support safe braking performance
- Maintain factory brake monitoring functionality
The sensor provides valuable advance warning before braking performance is compromised.
Why Do Brake Pad Wear Sensors Fail?
Brake wear sensors operate in a demanding environment exposed to constant heat cycles, moisture, brake dust and vibration.
Common causes of failure include:
- Normal brake pad wear
- Sensor activation once wear limits are reached
- Damaged wiring
- Corrosion within electrical connectors
- Heat-related deterioration
- Physical damage during brake servicing
- Water ingress Age-related degradation
As the sensor is considered a service component, replacement is generally recommended whenever new brake pads are fitted.
When Should a Brake Pad Wear Sensor Be Replaced?
The sensor should be replaced whenever it has been activated, damaged or when new brake pads are installed.
Common symptoms include:
- Brake wear warning light illuminated
- Intermittent brake warning messages
- Damaged or broken sensor wiring
- False brake wear warnings
- Corroded sensor connectors
- Sensor damage during brake servicing
- Rear brake pad replacement due to wear
Replacing the sensor during routine brake maintenance helps ensure continued reliability of the brake monitoring system.
Why Replacement Matters
A functioning brake wear sensor helps maintain braking safety while protecting other brake system components.
Benefits include:
- Accurate brake pad monitoring
- Reliable warning light operation
- Improved braking safety
- Protection of brake discs
- Reduced maintenance costs
- Better service planning
- Improved braking system reliability
- Long-term brake component protection
For Porsche Boxster and Cayman owners, maintaining the brake wear monitoring system helps preserve both performance and peace of mind.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
98761267601
The product you are viewing cross references to these numbers
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- Porsche Boxster 987 MKII 2.9L 2009-12
- Porsche Boxster S 987 MKII 3.4L 2009-12
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche Cayman S 3.4L 987C 2005-08
- Porsche Cayman 2.9L 987C MKII 2009-12
- Porsche Cayman S / R 3.4L 987C MKII 2009-12
Front Brake Pad Wear Sensors - Sold each
Maintain the safety and performance of your Porsche braking
system with these OE Match Front Brake Pad Wear Sensors. Designed for Porsche 997 Carrera, Porsche 987 Boxster S and
Porsche 987 Cayman S models, these sensors form a critical part of the factory
brake wear monitoring system, providing an early warning when front brake pads
approach their minimum service thickness.

Fits:
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- Porsche Boxster 987 MKII 2.9L 2009-12
- Porsche Boxster S 987 MKII 3.4L 2009-12
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche Cayman S 3.4L 987C 2005-08
- Porsche Cayman 2.9L 987C MKII 2009-12
- Porsche Cayman S / R 3.4L 987C MKII 2009-12
Mounted directly within the front brake pad assembly, the sensors continuously monitor brake pad wear and trigger the dashboard brake warning light when replacement is required. This allows owners to schedule brake maintenance before braking performance is affected or expensive brake disc damage occurs.
For high-performance Porsche sports cars, maintaining a fully operational brake wear monitoring system is essential for preserving braking efficiency, safety and long-term reliability.
What Do Brake Pad Wear Sensors Do?
Brake pad wear sensors monitor the remaining thickness of the brake pad friction material throughout its service life.
As the brake pads wear down, the sensor eventually contacts the brake disc and completes an electrical circuit that activates the brake wear warning light on the dashboard.
A properly functioning sensor helps:
- Monitor brake pad condition
- Provide early brake wear warnings
- Prevent excessive brake pad wear
- Protect brake discs from damage
- Improve maintenance planning
- Support safe braking performance
- Maintain factory brake monitoring functionality
The sensors act as a valuable preventative maintenance feature, helping avoid unnecessary brake system damage.
Why Do Brake Pad Wear Sensors Fail?
Brake wear sensors are exposed to significant heat, vibration, moisture and road contamination during normal use.
Common causes of failure include:
- Normal brake pad wear
- Sensor activation after reaching wear limits
- Damaged wiring
- Corrosion within connectors
- Heat-related deterioration
- Physical damage during brake servicing
- Water ingress Age-related material fatigue
Because the sensor is designed to work alongside the brake pads, replacement is normally recommended whenever new brake pads are installed.
When Should Brake Pad Wear Sensors Be Replaced?
Brake wear sensors should be replaced whenever they have been activated, damaged or during brake pad replacement.
Common symptoms include:
- Brake wear warning light illuminated
- Intermittent brake warning messages
- Damaged or broken sensor wiring
- False brake wear warnings
- Corroded electrical connections
- Sensor damage during brake servicing
- Front brake pad replacement due to wear
Replacing the sensors during routine brake maintenance ensures the warning system remains fully operational.
Why Replacement Matters
A functioning brake wear monitoring system helps maintain both safety and braking performance.
Benefits include:
- Accurate brake pad monitoring
- Reliable warning light operation
- Improved braking safety
- Protection of brake discs
- Reduced maintenance costs
- Better service planning
- Improved braking system reliability
- Long-term component protection
For Porsche owners, replacing worn brake wear sensors helps maintain factory braking standards and driving confidence.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99761275
The product you are viewing cross references to these numbers
OEMatch Brake Pad Wear Sensors — Stopping Power, Consistent Control
OEMatch brake pad wear sensors for Porsche models monitor pad thickness and provide timely warnings when replacement is needed. Accurate sensing supports routine maintenance, helps protect discs from excessive wear and contributes to predictable braking behaviour across classic and modern Porsche vehicles.
Understanding OEMatch Brake Pad Wear SensorsOEM (Original Equipment Manufacturer) parts are made by the same company that produced your Porsche’s original brake pad wear sensors. OE (Original Equipment) refers to parts matching original specifications for the brake pad wear sensors and may be supplied by alternative manufacturers. Aftermarket parts offer alternative options, sometimes with enhanced features or better value. OEMatch supplies non-OEM brake pad wear sensors engineered as direct-fit alternatives to OEM parts, made to original-spec dimensions and tolerances for Porsche models. These sensors detect pad material loss either by completing or interrupting an electrical circuit or by a change in resistance as the pad wears, which triggers a dashboard warning or service message. Sensors are routed and secured close to the pads and rely on intact insulation and secure connectors to deliver reliable signals. OEMatch maintains a wide Porsche-focused catalogue and extensive OE cross-references to help identify the correct item for each model and application.
Benefits Include- Restores accurate pad-wear monitoring so replacements are identified in good time.
- Helps prevent unnecessary disc damage by prompting timely pad changes.
- Simplifies servicing with standardised connections and mounting that fit original locations.
- Supports consistent warning-system behaviour across many Porsche models.
- Exposure to high brake temperatures can melt or crack sensor housings or cable insulation.
- Corrosion or ingress from water and road salt can cause electrical faults.
- Abrasion and vibration can wear or fray sensor cables and protective sleeving.
- Poor connector contacts or incorrect routing during servicing may interrupt the signal.
Replacing faulty or degraded sensors preserves the vehicle’s ability to warn of low pad thickness, reducing the risk of disc damage and helping maintain braking consistency. Timely replacement supports scheduled maintenance and contributes to overall braking system reliability for Porsche models.
Advantages- Wide model coverage and OE cross-references to aid correct part selection.
- Designed to fit original mounting points and clearances for straightforward installation.
- Durable materials and connector designs intended to resist heat and contamination.
- Suitable for maintenance, restoration and routine brake servicing.
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.