Original Porsche Part Genuine Porsche part 98761265600

Rear Brake Pad Wear Sensor 
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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.


Porsche 987.1 Boxster 2.7L 2005 - 2008
Porsche 987.1 Boxster S 2005 - 2008 with Ceramic brakes (PCCB)

Porsche 987.2 Boxster 2.9L 2009 - 2012
Porsche 987.2 Boxster S >>2009
Porsche 987.2 Boxster S 2009 - 2012  with Ceramic brakes (PCCB)
Porsche 987.2 Boxster Spyder 2009 - 2012  

Porsche 987C.1 Cayman 2.7L 2006 - 2008
Porsche 987C.1 Cayman S 2006 - 2008  with Ceramic brakes (PCCB)

Porsche 987C.2 Cayman 2.9L 2009 - 2012
Porsche 987C.2 Cayman S >>2009
Porsche 987C.2 Cayman R >>2009
Porsche 987C.2 Cayman S 2009 - 2012  with Ceramic brakes (PCCB)

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

Brake Pad Wear Sensor 
The Genuine Porsche brake pad wear sensor is an OE sender wire / wear indicator for selected Porsche 987 Boxster and 987 Cayman rear brake applications. It monitors brake pad wear and activates the warning system when the pads reach their service limit. Ideal for brake pad replacement, warning light repair or restoring accurate brake wear monitoring with Genuine Porsche parts.
Sold individually, There are 2 per axle.


Porsche 987.1 Boxster 2.7L 2005 - 2008
Porsche 987.1 Boxster S 2005 - 2008 with Ceramic brakes (PCCB)

Porsche 987.2 Boxster 2.9L 2009 - 2012
Porsche 987.2 Boxster S >>2009
Porsche 987.2 Boxster S 2009 - 2012  with Ceramic brakes (PCCB)
Porsche 987.2 Boxster Spyder 2009 - 2012  

Porsche 987C.1 Cayman 2.7L 2006 - 2008
Porsche 987C.1 Cayman S 2006 - 2008  with Ceramic brakes (PCCB)

Porsche 987C.2 Cayman 2.9L 2009 - 2012
Porsche 987C.2 Cayman S >>2009
Porsche 987C.2 Cayman R >>2009
Porsche 987C.2 Cayman S 2009 - 2012  with Ceramic brakes (PCCB)


This original Porsche brake pad wear sensor, also known as a sender wire or pad wear indicator, forms part of the brake monitoring system and helps alert the driver when the brake pads have reached their service limit.

What This Part Does / Functions
•  Monitors brake pad wear
•  Activates the brake pad warning system when the pads reach their wear limit
•  Helps alert the driver before the brake pads become excessively worn
•  Supports safe and timely brake maintenance
•  Connects into the vehicle’s brake wear monitoring circuit
•  Replaces a worn, damaged, broken or previously triggered sensor
•  Provides correct OE Porsche fitment and connector style
•  Helps restore correct brake pad warning system operation after brake service.

Why Replace This Part?
Brake pad wear sensors are exposed to heat, brake dust, water, road debris and vibration. In many cases, the sensor is designed to wear with the brake pad and should be replaced whenever new brake pads are fitted. A damaged or worn sensor may trigger a warning light, fail to alert the driver when the pads are worn, or break during brake pad replacement.

Replacing it with a Genuine Porsche OE brake pad wear sensor helps maintain accurate brake wear monitoring and correct factory fitment.

Common Symptoms of a Faulty Brake Pad Wear Sensor
•  Brake pad warning light illuminated
•  Warning light remains on after pad replacement
•  Broken or brittle sensor wire
•  Sensor worn through by brake pad contact
•  Corroded or damaged connector
•  False brake wear warning
•  No warning despite worn brake pads
•  Sensor damaged during brake service.

When to Replace This Part
•  When replacing rear brake pads
•  If the brake pad warning light is active
•  If the sensor has contacted the brake disc
•  If the sensor wire is damaged, cut, brittle or broken
•  If the connector is corroded or no longer clips securely
•  During rear brake caliper or brake disc service
•  During brake system restoration
•  When fitting new pads and restoring correct brake wear monitoring

Where It Fits on the Car
This sensor fits into the brake pad wear sensor slot on the relevant brake pad and connects to the vehicle’s brake wear warning wiring. It is commonly used at the rear caliper position on selected Porsche 987 Boxster and 987 Cayman models.

Correct routing is important to prevent the wire from rubbing against the wheel, brake disc or suspension components.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

98761267602

The product you are viewing cross references to these numbers