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Brake Pad Wear Sensors
By OE Match
- Porsche 997 MK1 TURBO 2007-09
- Porsche 997 MK1 GT3 / GT3 RS 2007-09
- Porsche 997 MK1 GT2 2007-09
- Porsche 997 MKII Carrera C2 3.6L 2009-12
- Porsche 997 MKII Carrera C4 3.6L 2009-12
- Porsche 997 MKII Carrera C4S 3.8L 2009-12
- Porsche 997 MKII Turbo 2010-13
- Porsche 997 MKII GT2 RS 2011-13
High-quality OE Match replacement rear brake pad wear sensor, engineered to match original Porsche specifications for monitoring rear brake pad wear. Designed for Porsche 997 models, this sensor works with the vehicle’s onboard diagnostic system to provide timely alerts when the rear brake pads approach the service limit.
Sold individually, typically 2 sensors per axle for complete rear pad sets
Fits:

Porsche 997.2 C2 2009 - 2012 Rear Caliper
Porsche 997.2 C4 / C4S 2009 - 2012 Rear Caliper
Porsche 997 TT / GT2 2007 - 2013 Rear Caliper
Porsche 997 GT3 2007 - 2013 Rear Caliper
The rear brake pad wear sensor detects when the brake pad material has worn to its minimum safe thickness and signals the vehicle’s warning system. This alert enables brake servicing before the pads cause damage to other braking components.
Function:
• Monitors rear brake pad wear
• Interfaces with the vehicle’s onboard warning system
• Helps prevent brake rotor damage from worn pads
Brake pads naturally wear down with use. A functioning brake pad wear sensor ensures you receive timely alerts before the pads reach critically low levels. Without a reliable sensor, pad wear may go unnoticed, leading to reduced braking performance, rotor damage, and safety concerns - especially on performance-oriented vehicles like the 997.
When to replace:
• Brake wear warning light appears
• Sensor wiring or connector is damaged or corroded
• After rear brake pad replacement
• During routine brake system servicing
• When upgrading brake components
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99761275402
The product you are viewing cross references to these numbers
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- Porsche Boxster S 987 MKII 3.4L 2009-12
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MKII Carrera C2 3.6L 2009-12
- Porsche 997 MKII Carrera C4 3.6L 2009-12
- Porsche 997 MKII Carrera C2S 3.8L 2009-12
- Porsche 997 MKII Carrera C4S 3.8L 2009-12
- Porsche Cayman S 3.4L 987C 2005-08
- Porsche Cayman S / R 3.4L 987C MKII 2009-12

For cars with Ceramic brake PCCB (I450)
Porsche 997.1 C2 / C2S 2005-08 FRONT
Porsche 997.2 C2 / C2S 2009-12 FRONT
Porsche 997.2 Carrera GTS / 4 GTS 2009-12 FRONT
Porsche 987.1 Boxster S 2005-08 FRONT
Porsche 987.2 Boxster S / Boxster Spyder 2009-12 FRONT
Porsche 987C.1 Cayman S 2005-08 FRONT
Porsche 987C.2 Cayman S / Cayman R 2009-12 FRONT
Price shown is for each wire sensor.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99761267
The product you are viewing cross references to these numbers
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
- Porsche 997 MKII Carrera C4S 3.8L 2009-12
Front Brake Pad Wear Sensor
Sold each - 2 required per car
Maintain the safety and effectiveness of your Porsche
braking system with this OE Match Front Brake Pad Wear Sensor, commonly
referred to as the brake pad warning wire, for the Porsche 997 Carrera 4S. This
important component continuously monitors brake pad wear and alerts the driver
when the pads have reached their service limit.

Porsche 997 MK1 Carrera 4S 3.8L 2005-08
Porsche 997 MKII Carrera C4S 3.8L 2009-12
Installed directly into the brake pad, the wear sensor forms part of the vehicle's brake monitoring system. As the brake pads wear down, the sensor eventually contacts the brake disc, breaking the electrical circuit and triggering the brake pad warning light on the dashboard. This provides a clear indication that the brake pads require replacement.
Manufactured to OE Match standards, this replacement sensor offers reliable performance, correct fitment and dependable brake wear monitoring.
What Does the Brake Pad Wear Sensor Do?
The brake pad wear sensor is designed to monitor the thickness of the brake pads.
Its primary functions include:
- Monitoring brake pad wear
- Activating the dashboard warning light
- Alerting the driver to required brake maintenance
- Supporting safe vehicle operation
- Preventing excessive brake pad wear
- Helping protect brake discs from damage
- Supporting routine brake servicing
The sensor acts as an early warning system, helping drivers replace brake pads before braking performance is compromised.
Why Do Brake Pad Wear Sensors Fail?
Brake wear sensors operate in a demanding environment exposed to heat, moisture, dirt and vibration.
Common causes of failure include:
- Normal brake pad wear
- Sensor activation after pad wear
- Heat damage
- Road debris impact
- Corrosion within electrical connections
- Wiring damage
- Brake servicing damage
- Age-related deterioration
In many cases, the sensor is designed as a service item and is typically replaced whenever the brake pads are renewed.
When Should the Brake Pad Wear Sensor Be Replaced?
Replacement is recommended whenever:
- The brake wear warning light is illuminated
- New brake pads are installed
- The sensor has contacted the brake disc
- The wiring is damaged
- Corrosion is present
- Brake servicing is being carried out
- Fault codes indicate sensor failure
- Preventative maintenance is being performed
Most Porsche technicians recommend fitting new sensors whenever new brake pads are installed.
Why Replacement Matters
A damaged or worn sensor can prevent the brake monitoring system from operating correctly.
Benefits of replacement include:
- Accurate brake wear monitoring
- Reliable warning light operation
- Improved vehicle safety
- Protection against excessive pad wear
- Prevention of brake disc damage
- Correct brake system functionality
- Reduced maintenance risks
- Restoration of factory brake monitoring performance
Replacing a worn sensor is a simple and cost-effective way to maintain the effectiveness of the Porsche brake warning system.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99761268001
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.