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Brake Pad Wear Sensors
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Related, superseded, cross reference or alternative numbers for comparison.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 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


Porsche 997 TT / GT2 2007>> Rear Caliper
Porsche 997 GT3 2007>> Rear Caliper
Porsche 997 C2 MKII 2009>> Rear Caliper
Porsche 997 C4 / C4S MKII 2009>> Rear Caliper
Price shown is for each wire sensor.
Fits Left or Right
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99761275402
The product you are viewing cross references to these numbers
- 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

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 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 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


Porsche 997 C4S MKI 2007>> Front Caliper
Porsche 997 C4S MKII 2009>> Front Caliper
Price shown is for each wire sensor.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99761268001
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
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
- Porsche 997 MKII Carrera C4S 3.8L 2009-12
-
Disc brake / Front axle 997.2 Carrera 2 / Carrera 2S / SportClassic / Speedster / Black Edition 2009-12 602-000
-
Disc brake / Front axle 997.2 Carrera 4 / Carrera 4S / Targa / Targa S 2009-12 602-001
-
Disc brake / Front axle 997.2 Carrera GTS / 4 GTS 2009-12 602-002
-
Disc brake / Rear axle 997.2 Carrera 2 / Carrera 2-S / SportClassik / Speedster / BlackEdition 2009-12 603-000
-
Disc brake / Rear axle 997.2 Carrera 4 / Carrera 4-S / Targa / Targa S 2009-12 603-001
Porsche Brake Pad Anti-Wear Sensors | Design911 Precision Components for Safety, Monitoring & Maintenance
Brake pad anti-wear sensors play a vital role in your Porsche’s braking system by monitoring pad thickness and alerting you when replacement is needed. By providing real-time data, these sensors help prevent excessive wear, protect brake discs, and maintain braking safety. Replacing worn or damaged sensors ensures your Porsche’s onboard systems can accurately detect pad wear — preserving both performance and peace of mind.
At Design911, we supply a comprehensive range of brake pad anti-wear sensors designed for precise fitment and dependable performance. Manufactured using high-grade materials and advanced sensor technology, our components ensure accurate readings under all driving conditions. Ideal for routine maintenance, restoration, or brake system upgrades, these sensors help your Porsche maintain its legendary braking precision.
What Do Brake Pad Anti-Wear Sensors Do?
Brake pad wear sensors are an essential electronic component that monitor the condition of your brake pads and alert the driver when they need replacement.
Core Functions:
• Continuously monitor brake pad thickness.
• Trigger dashboard warning lights when pads reach the wear limit.
• Protect brake discs from damage caused by worn pads.
• Support preventative maintenance and consistent braking performance.
• Ensure optimal braking efficiency and driver safety.
Accurate brake pad sensors allow you to maintain Porsche’s high standards of safety, performance, and responsiveness.
Why Do Brake Pad Anti-Wear Sensors Fail or Degrade?
Because they operate in extreme environments near the wheels and brakes, wear sensors are exposed to heat, friction, and contamination, which can cause malfunction or damage over time.
Common Causes of Failure Include:
• Melting or cracking due to high brake temperatures.
• Corrosion or electrical failure from water and road salt.
• Cable wear or fraying caused by vibration or debris.
• Poor connections or sensor dislodgement during servicing.
• Age-related degradation of wiring or insulation.
When a sensor fails, the system may provide false warnings or fail to detect worn pads, increasing the risk of brake system damage or reduced safety.
Why Replace or Upgrade Your Porsche Brake Pad Anti-Wear Sensors?
Replacing faulty or aged sensors ensures your Porsche’s braking system continues to deliver accurate monitoring and performance reliability. Design911’s precision-engineered sensors are crafted for long-term durability and compatibility across Porsche models.
Key Benefits:
• Restores accurate brake pad wear monitoring.
• Prevents unnecessary pad or disc wear.
• Heat- and moisture-resistant design for long-lasting reliability.
• Plug-and-play fitment for easy installation.
• Engineered for exact Porsche compatibility.
• Ideal for maintenance, upgrades, or complete brake servicing.
Design911’s Porsche brake pad anti-wear sensors ensure consistent safety alerts and reliable performance — maintaining the precision and quality expected of every Porsche braking system.
Highlights
• Premium Porsche brake pad wear sensors for accurate
monitoring.
• Designed to withstand extreme heat and vibration.
• Ensures timely replacement of brake pads for safety.
• Protects discs and braking components from excessive wear.
• Compatible with classic and modern Porsche models.
• Perfect for servicing, restoration, or performance upgrades.