Holstein 2BWS0166 Disc Brake Pad Wear Sensor - Front, Front Right, Rear or Rear Right

Disc Brake Pad Wear Sensor for Mercedes-Benz

Holstein Parts 2BWS0166 is a disc brake pad wear sensor built for Mercedes-Benz applications that use a bullet-style, male connector with an oval plug shape. It is listed for front and rear positions across a wide range of AMG, Maybach, G-Class, S-Class, E-Class, CLS, SL, and GLE/GLS models, including many vehicles with harness or sport brake configurations.

Key Features

• Disc brake pad wear sensor for brake wear monitoring
• Bullet terminal type with 2 terminals
• 1 connector, oval connector shape, male connector gender
• Direct-fit coverage for many Mercedes-Benz front and rear brake applications
• Cross-references Beck/Arnley 084-1627 and PowerStop SW-0511 for the same application
• Holstein Parts 2BWS0166 is listed across 1996-2025 model years

Detailed Description

Holstein Parts 2BWS0166 is a brake pad wear sensor designed for vehicles that rely on an electronic wear indicator to alert the driver when brake pads reach service limits. The connector design uses a single oval male connector with bullet terminals, making it a fitment-specific replacement for many Mercedes-Benz brake systems. This part number appears in applications such as the Mercedes-Benz AMG GT, G63 AMG, GLE63 AMG S, GLS580, S500, and C63 AMG, along with numerous other front and rear brake positions.

Holstein Parts is the product line identified for this sensor, and 2BWS0166 is the catalog reference used to match the correct connector style and brake position. For buyers searching by vehicle, this part is commonly selected for Mercedes-Benz brake pad wear sensor replacement on front right, rear right, front, and rear applications where the OE-style connector layout matches the vehicle.

What It Helps Address

• Brake wear warning light staying on after pad service
• Damaged or broken pad wear sensor wiring
• Connector mismatch during brake pad replacement
• Fault codes related to brake pad wear monitoring
• Restoring brake wear indicator function on Mercedes-Benz models

Installation Notes and Tips

Verify the connector shape, terminal style, and brake position before ordering. This sensor is listed for specific Mercedes-Benz front and rear applications, including front right and rear right positions on certain models. Confirm whether your vehicle uses a standard brake setup or an excluded ceramic brake system, since several fitments note exceptions for ceramic brake discs or ceramic brake packages. For accurate installation, route the sensor exactly as the original and inspect the harness connection for damage before final assembly.

Quality Assurance

Holstein Parts 2BWS0166 is cataloged as a direct replacement-style brake wear sensor with OE-matched connector details for the listed Mercedes-Benz applications. The part is cross-referenced to established aftermarket numbers including Beck/Arnley 084-1627 and PowerStop SW-0511 for the same application.