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Brake Pad Wear Sensors
OE Match replacement sensor designed to monitor the wear level of the front left brake pads on Porsche Boxster 987 and Cayman 987C models. When the brake pad lining reaches a predetermined thickness, this sensor triggers a warning message on the dashboard to alert the driver that service is needed.
Fits:
Porsche 987.1 Boxster 2.7L 2005 - 2008 Front Left Caliper
Porsche 987C.1 Cayman 2.7L 2006 - 2008 Front Left Caliper
Diagram ref no 7
This OE Match brake pad wear sensor is engineered to match original Porsche specifications for electrical characteristics, connector type, and mechanical fit. It functions as a reliable early-warning device that detects excessive pad wear before the pads are fully depleted, helping prevent rotor damage and maintain safe braking performance.
Replacing a worn, damaged, or missing wear sensor with this OE Match unit ensures the vehicle’s brake monitoring system works as intended, helping you stay ahead of service intervals and maintain optimal brake health.
The brake pad wear sensor detects when the friction material on the front left brake pad has worn down to a serviceable limit. It sends a signal to the vehicle’s dashboard or onboard computer, prompting a brake service notification so pads can be replaced before damage or performance degradation occurs.
Function:
• Monitors brake pad wear on the front left axle
• Interfaces with the vehicle’s warning system
• Helps prevent rotor contact from worn pads
Brake pads naturally wear with use, and without a functioning wear sensor, you may not receive timely notification of service needs. Ignoring worn pads can lead to increased stopping distances, brake noise, and damage to rotors. Installing a proper OE Match brake pad wear sensor ensures accurate monitoring, timely pad changes, and continued confidence in your braking performance.
When to replace:
• Brake wear warning light is illuminated
• Sensor damaged, corroded, or missing
• After replacing front brake pads
• During brake system servicing or upgrades
• If wiring/connectors show signs of wear
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99761275501
The product you are viewing cross references to these numbers
- Porsche Boxster 987 2.7L 2005-08/08
- Porsche Cayman 2.7L 987C 2006-08
This Brake Pad Wear Sensor is a genuine Porsche replacement sensor designed to keep your brake warning system working accurately. It replaces the previous 99761275500 part number and provides a precise fit for front brake pad wear detection on select Boxster and Cayman models. This ensures timely maintenance alerts and supports continued safe braking performance.
Fits:
Porsche 987.1 Boxster 2.7L 2005 - 2008 Front Left Caliper
Porsche 987C.1 Cayman 2.7L 2006 - 2008 Front Left Caliper
Diagram ref no 7
Brake pad wear sensors play a critical safety role in modern braking systems. Without them, the driver may not be alerted in time to deteriorating brake pads, increasing the risk of reduced stopping performance, metal-on-metal wear, and rotor damage. Fitting a Genuine Porsche OE sensor ensures the wear-warning circuit functions exactly as designed with compatible connectors, lengths, and electrical characteristics.
• Installed on: Front brake assembly
• Position: Mounted alongside the front brake pads and routed to the vehicle’s wiring harness
• Function location: The sensor end sits adjacent to the brake pad backing plate so it can sense when pad material has worn to the service limit.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99761275501
The product you are viewing cross references to these numbers
- Porsche Boxster 987 2.7L 2005-08/08
- Porsche Cayman 2.7L 987C 2006-08
Porsche 987 MKI Boxster 2.7L 2005-08 Rear Caliper
Porsche 987 MKII Boxster 2.9L 2009>> Rear Caliper
Porsche 987C MKI Cayman 2.7L 2005-08 Rear Caliper
Porsche 987C MKII Cayman 2.9L 2009>> Rear Caliper
Price shown is for each wire sensor.
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 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
The purpose of a brake pad wear sensor is to monitor pad thickness. When the pad material wears to a certain point, the sensor closes a circuit or sends a signal to the vehicle's brake control module, alerting the driver to replace the pads. Built to OEM specifications, it ensures the correct connector type, length, mounting clamp interface, and resistance calibration, consistent with factory parameters. It should normally be replaced when replacing your brake pads.
Sold each.

Porsche 997 C2S MKI 2005-08 Front Caliper
Porsche 997 C2S MKII 2009>> Front Caliper
• Position on Vehicle: Mounted adjacent to the front disc brake pads, typically clipped into the caliper or pad backing plate with the sensor end extending to contact the rotor or matching pad drain hole.
• Applications: Ideal when the original wear sensor has failed, is missing, or during brake pad replacement to ensure the wear-warning circuit remains intact and fully functional.
The brake pad wear sensor is a small yet essential part of your vehicle’s safety system. When it fails or is removed, your brake pad wear monitoring may become inactive - leading to unnoticed pad depletion, increased rotor wear or even unscheduled brake failure. Replacing it ensures that when your pads reach their safe limit, you’ll receive an accurate alert and can service your brakes in time.
When and why to replace:
• The brake pad wear warning light is showing, indicating the sensor circuit has been triggered or failed.
• The sensor wiring is damaged, corroded, or the sensor itself is missing or reused excessively.
• During brake pad replacement - fitting a new sensor ensures the system remains fully functional.
• After any caliper or brake overhaul where the original sensor connection might have been disturbed.
• When using non-standard or aggressive brake pads, where ensuring the warning circuit works is particularly important.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
997612
The product you are viewing cross references to these numbers
- Porsche Boxster 987 2.7L 2005-08/08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MKII Carrera C2S 3.8L 2009-12
- Porsche Cayman 2.7L 987C 2006-08

Porsche 997 C2S MKI 2005-08 Front Caliper
Porsche 997 C2S MKII 2009>> Front Caliper
Price shown is for each wire sensor.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
997612
The product you are viewing cross references to these numbers
- Porsche Boxster 987 2.7L 2005-08/08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MKII Carrera C2S 3.8L 2009-12
- Porsche Cayman 2.7L 987C 2006-08
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.