HomeBrake > SensorsStandard Ignition PWS131 Disc Brake Pad Wear Sensor - Rear
Part #: PWS131

Standard Ignition PWS131 Disc Brake Pad Wear Sensor - Rear

Rear
22 vehicles fit this part
Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
Fitment: BMW, Z3 and 318ti
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Reliable Disc Brake Pad Wear Sensor for BMW 318ti and Z3

The Standard Ignition PWS131 disc brake pad wear sensor is designed to provide accurate and timely alerts for brake pad wear on select BMW models. Engineered for compatibility with BMW 318ti and Z3 vehicles, this sensor helps maintain optimal braking performance and safety.

Key Features of the Standard Ignition PWS131 Sensor

  • Connector Gender: Female for secure electrical connection
  • Single round connector shape ensuring proper fit
  • Harness length of 32 inches (812.8 mm) for flexible installation
  • Mounts directly on the brake caliper for precise wear detection
  • Terminal Type: Male pin terminals with two terminals for reliable signal transmission
  • Function: Monitors brake pad wear to alert drivers when replacement is needed

Detailed Product Description

The Standard Ignition PWS131 disc brake pad wear sensor is specifically designed to fit BMW 318ti and Z3 models, providing a dependable solution for monitoring brake pad condition. Featuring a female connector with a round shape and a single connection point, this sensor ensures a secure and accurate electrical interface. The 32-inch harness length offers sufficient reach for installation on the brake caliper, where the sensor detects pad wear levels. Equipped with two male pin terminals, the sensor transmits wear signals effectively to the vehicle’s monitoring system, helping prevent brake failure due to worn pads.

Common Applications and Issues Addressed

  • Alerts for worn brake pads before they cause damage
  • Prevents brake system failure due to unnoticed pad wear
  • Helps maintain consistent braking performance on BMW 318ti and Z3
  • Reduces risk of costly rotor damage from worn pads
  • Supports timely maintenance scheduling for brake components

Installation Notes and Tips

  • Ensure the sensor is mounted securely on the brake caliper
  • Verify the female connector aligns properly with the vehicle’s wiring harness
  • Route the 32-inch harness carefully to avoid contact with moving parts or heat sources
  • Check terminal connections for a snug fit to prevent signal loss
  • Consult the vehicle’s service manual for specific brake system procedures

Quality Assurance and Warranty

Standard Ignition parts are manufactured to meet or exceed OEM specifications, ensuring reliable performance and durability. The PWS131 disc brake pad wear sensor undergoes rigorous quality control to provide consistent operation. Warranty coverage details are available through Standard Ignition and typically include protection against defects in materials and workmanship.

BrandStandard Ignition
Part NumberPWS131
Connector GenderFemale
Connector ShapeRound
ContentsSensor
FunctionsBrake Pad Wear Sensor
Mounting LocationBrake Caliper
Terminal GenderMale
Terminal TypePin

This part fits 22 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2002BMWZ33.0LL6Rear
2002BMWZ32.5LL6Rear
2002BMWZ33.2LL6Rear
2001BMWZ32.5LL6Rear
2001BMWZ33.0LL6Rear
2001BMWZ33.2LL6Rear
2000BMWZ32.5LL6Rear
2000BMWZ32.8LL6Rear
2000BMWZ33.2LL6Rear
1999BMW318tiRear
1999BMWZ32.8LL6Rear
1999BMWZ33.2LL6Rear
1999BMWZ32.5LL6Rear
1998BMW318tiRear
1998BMWZ32.8LL6Rear
1998BMWZ33.2LL6Rear
1998BMWZ31.9LL4Rear
1997BMW318tiRear
1997BMWZ3Rear
1996BMW318tiRear
1996BMWZ3Rear
1995BMW318tiRear

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

084-15122BWS0096343511825335S843671-370476324EWS-25SU9898SW-0409V20-72-5111WS331

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.