Holstein 2BWS0105 Disc Brake Pad Wear Sensor - Rear

Holstein Rear Brake Pad Wear Sensor

Holstein Parts 2BWS0105 is a disc brake pad wear sensor for rear brake applications on select BMW models. It uses a pin terminal design with one round female connector and two terminals for a direct-style electrical connection at the brake pad wear circuit.

Built for rear brake wear monitoring, this sensor supports accurate pad wear warning signal transfer on BMW 323i, 328i, 325Ci, 330Ci, and related 3 Series applications. Holstein Parts focuses on application-specific brake sensor coverage, and this part number is listed for multiple rear-fit BMW E46 platform vehicles.

Key Features

• Disc brake pad wear sensor for rear brake positions
• Pin terminal type with 2 terminals
• 1 round female connector
• Application coverage for select BMW 3 Series rear brake setups
• Holstein Parts 2BWS0105 replacement sensor

Detailed Fitment and Application

Compatible with rear brake wear sensor applications on 1997-2006 BMW 323i, 323Ci, 325i, 325Ci, 325xi, 328i, 328Ci, 330i, 330Ci, and 330xi models, with notes for certain Mexico-built and E46-specific vehicles. This part cross-references Beck/Arnley 084-1514 and Standard Ignition PWS132 for the same application. The Holstein Parts line is used for brake sensor replacement needs where the original wear indicator circuit has triggered a warning or the sensor has been damaged during pad service.

What This Part Helps Address

• Brake pad wear warning light staying on after pad service
• Damaged or broken rear brake wear sensor wiring
• Faulty pad wear signal at the rear axle
• Sensor replacement during rear brake pad maintenance
• Electrical connection issues at the brake wear indicator circuit

Installation Notes and Tips

Verify connector shape, terminal count, and rear-position fitment before installation. Inspect the brake pad wear harness and connector for heat damage, corrosion, or broken locking tabs before connecting the new sensor. Confirm the vehicle’s year, model, and build notes match the listed BMW applications, especially for 1997-2001 E46 rear brake fitments and Mexico-built vehicles.

Quality Assurance

Holstein Parts 2BWS0105 is cataloged as an application-specific brake sensor replacement for select BMW rear brake systems. Confirm fitment against the vehicle listing and connector style before purchase.