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- 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
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Related, superseded, cross reference or alternative numbers for comparison.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
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- Porsche Boxster 981 2.7L 2012-16
- Porsche Boxster 981 S / GTS 3.4L 2012-16
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- Porsche Boxster T 718 2.0L Manual (300 Bhp) 01/2019>>
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- Porsche Boxster 25 Years 718 4.0L Manual (400 Bhp) 01/2020>>
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- Porsche 991.1 Carrera C2 3.4L (350 Bhp) 2012-16
- Porsche 991.1 Carrera C4 3.4L (350 Bhp) 2012-16
- Porsche 991.2 Carrera 2 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Carrera 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Cabriolet 2 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Cabriolet 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Targa 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Turbo Coupe 3.8L (540 Bhp) 2016-19
- Porsche 991.2 Turbo Cabriolet 3.8L (540 Bhp) 2016-19
- Porsche Cayman 2.7L 981 2013-16
- Porsche Cayman S / GTS 3.4L 981 2013-16
- Porsche Cayman 718 2.0L Manual (300 Bhp)
- Porsche Cayman 718 2.0L PDK (300 Bhp)
- Porsche Cayman S 718 2.5L Manual (350 Bhp)
- Porsche Cayman S 718 2.5L PDK (350 Bhp)
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Front Brake Pad Wear Sensor - These should be replaced when replacing brake pads.
Sold each - 2 required per car
Maintain the safety and reliability of your Porsche braking
system with these Front Brake Pad Wear Sensors.
Fits:
- Porsche Boxster 981 2.7L 2012-16
- Porsche Boxster 981 S / GTS 3.4L 2012-16
- Porsche Boxster 718 2.0L Manual (300 Bhp) 2017>>
- Porsche Boxster 718 2.0L PDK (300 Bhp) 2017>>
- Porsche Boxster S 718 2.5L Manual (350 Bhp) 05/2017>>
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- Porsche Boxster T 718 2.0L Manual (300 Bhp) 01/2019>>
- Porsche Boxster T 718 2.0L PDK (300 Bhp) 01/2019>>
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- Porsche Boxster GTS 718 4.0L Manual (400 Bhp) 01/2019>>
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- Porsche Boxster 25 Years 718 4.0L Manual (400 Bhp) 01/2020>>
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- Porsche 991.1 Carrera C2 3.4L (350 Bhp) 2012-16
- Porsche 991.1 Carrera C4 3.4L (350 Bhp) 2012-16
- Porsche 991.2 Carrera 2 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Carrera 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Cabriolet 2 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Cabriolet 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Targa 4 3.0L (370 Bhp) 2016-19
- Porsche 991.2 Turbo Coupe 3.8L (540 Bhp) 2016-19
- Porsche 991.2 Turbo Cabriolet 3.8L (540 Bhp) 2016-19
- Porsche Cayman 2.7L 981 2013-16
- Porsche Cayman S / GTS 3.4L 981 2013-16
- Porsche Cayman 718 2.0L Manual (300 Bhp)
- Porsche Cayman 718 2.0L PDK (300 Bhp)
- Porsche Cayman S 718 2.5L Manual (350 Bhp)
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- Porsche Cayman T 718 2.0L Manual (300 Bhp)
- Porsche Cayman T 718 2.0L PDK (300 Bhp)
- Porsche Cayman GTS 718 2.5L Manual (365 Bhp)
- Porsche Cayman GTS 718 2.5L PDK (365 Bhp)
- Porsche Cayman GTS 718 4.0L Manual (400 Bhp)
- Porsche Cayman GTS 718 4.0L PDK (400 Bhp)
These OE direct-fit brake wear sensor integrates seamlessly with your Porsche's electronic braking system, ensuring accurate wear monitoring and helping prevent unnecessary brake disc damage caused by excessively worn brake pads.
What Does the Brake Pad Wear Sensor Do?
The brake pad wear sensor is an important safety component that monitors the thickness of the front brake pads. As the friction material wears down, the sensor eventually contacts the brake disc, completing an electrical circuit that activates the brake wear warning light on the dashboard.
Its primary functions include:
- Monitoring front brake pad wear.
- Activating the dashboard brake warning light.
- Preventing excessive brake pad wear.
- Helping protect the brake discs from damage.
- Supporting scheduled brake maintenance.
- Improving overall braking safety.
The sensor provides an early warning, allowing brake pads to be replaced before braking performance is compromised.
Why Do Brake Pad Wear Sensors Fail?
Brake wear sensors are consumable components and are
designed to be replaced during brake servicing. Common reasons for failure
include:
- Normal activation once the brake pads reach their wear limit.
- Heat generated by the braking system.
- Damage during brake pad removal.
- Road debris and moisture.
- Corrosion of the electrical contacts.
- Wiring damage caused by age or movement.
- General wear after years of service.
Once activated, the sensor cannot normally be reused and should always be replaced with new brake pads.
When Should the Brake Pad Wear Sensor Be Replaced?
Replacement is recommended whenever:
- The brake wear warning light is illuminated.
- New front brake pads are installed.
- The sensor has contacted the brake disc.
- The wiring has become damaged.
- Corrosion affects the electrical connector.
- During routine brake servicing.
- As part of a complete front brake overhaul.
Replacing the sensor at the same time as the brake pads ensures accurate future wear monitoring and avoids unnecessary labour costs.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99160916500
The product you are viewing cross references to these numbers
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OE Match Front Brake Pad Wear Sensor - uses
a single pad sensor design, whereas the original Porsche sensor uses a double
pad sensor
Sold each - 2 required per car
Keep your Porsche braking system performing safely with this
OE Match Front Brake Pad Wear Sensor
Fits:
- Porsche Boxster 981 2.7L 2012-16
- Porsche Boxster 981 S / GTS 3.4L 2012-16
- Porsche Boxster 718 2.0L Manual (300 Bhp) 2017>>
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- Porsche 991.1 Carrera C2 3.4L (350 Bhp) 2012-16
- Porsche 991.1 Carrera C4 3.4L (350 Bhp) 2012-16
- Porsche Cayman 2.7L 981 2013-16
- Porsche Cayman S / GTS 3.4L 981 2013-16
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- Porsche Cayman GTS 718 4.0L Manual (400 Bhp)
- Porsche Cayman GTS 718 4.0L PDK (400 Bhp)
Brake pad wear sensors provide an early warning when your front brake pads have reached their service limit, allowing them to be replaced before braking performance is affected or damage occurs to the brake discs.
This OE Match replacement uses a single pad sensor design, whereas the original Porsche sensor uses a double pad sensor. Despite this difference, the sensor functions exactly as intended by connecting it to one brake pad only, providing the same reliable brake wear monitoring and dashboard warning operation as the original system.
Manufactured to OE-quality standards, this direct-fit replacement offers dependable performance, excellent durability and outstanding value.
What Does a Brake Pad Wear Sensor Do?
The brake pad wear sensor is an electronic monitoring device fitted to the brake pads. As the friction material wears down, the sensor eventually contacts the brake disc, completing an electrical circuit that illuminates the brake wear warning light on the dashboard.
Its primary functions include:
- Monitoring front brake pad wear.
- Activating the dashboard brake warning light.
- Preventing excessive brake pad wear.
- Helping protect expensive brake discs.
- Supporting scheduled vehicle maintenance.
- Improving braking safety.
The warning system gives the driver sufficient notice to replace the brake pads before braking performance is compromised.
Single Sensor Design
Unlike the original Porsche sensor, which monitors two brake pads, this OE Match version uses one single pad sensor.
This is completely normal for this replacement design and does not affect operation. Simply connect the sensor to one brake pad, where it will function exactly as intended by providing accurate brake wear indication through the factory warning system.
Why Do Brake Pad Wear Sensors Fail?
Brake wear sensors are designed as consumable service components and are normally replaced during every brake pad change.
Common reasons for replacement include:
- Activation after the brake pads reach their wear limit.
- Damage during brake pad removal.
- Heat generated by the braking system.
- Moisture and road contamination.
- Corrosion of the electrical contacts.
- Wiring damage caused by movement or age.
- General deterioration over time.
Once activated, a brake wear sensor should not normally be reused.
When Should the Brake Pad Wear Sensor Be Replaced?
Replacement is recommended whenever:
- The brake wear warning light is illuminated.
- New front brake pads are installed.
- The sensor has contacted the brake disc.
- The wiring becomes damaged.
- Corrosion affects the electrical connector.
- During routine brake servicing.
- Completing a front brake overhaul.
Brake pad wear sensors should normally be replaced whenever replacing your brake pads to ensure accurate brake wear monitoring and reliable long-term operation.
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- Porsche 991.1 Turbo 3.8L (520 Bhp) 2014-16
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Fits:
Porsche 991.1 Carrera S 2012-16 not for cars with PCCB - Ceramic brake
Porsche 991.1 Carrera 4S 2012-16 not for cars with PCCB - Ceramic brake
Porsche 991 Turbo 2017>> not for cars with PCCB - Ceramic brake
Porsche 982 Boxster 2017>> for cars with Ceramic brake PCCB
Porsche 982C Cayman 2017>> for cars with Ceramic brake PCCB
Click 'Zoom in' for large parts diagram.
Diagram ref no 18
Related reference numbers
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99135296000
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