Holstein 2BWS0161 Disc Brake Pad Wear Sensor - Rear

Rear Brake Pad Wear Sensor for BMW

Holstein Parts 2BWS0161 is a rear disc brake pad wear sensor built for BMW applications that use an electrical pad wear warning system. It features a female round connector with two terminals and a pin-style terminal design for direct replacement of the original sensor on listed vehicles.

Compatible with rear brake wear monitoring on select BMW 1 Series, 3 Series, and M models, this sensor helps restore proper brake warning function when the original sensor is worn or damaged. Holstein Parts 2BWS0161 is a practical OE-style replacement for drivers servicing rear brake pads on BMW 128i, 328i, 335i, and related applications.

Key Features

• Disc brake pad wear sensor for rear brake applications
• Female connector with round shape for OE-style fitment
• Pin terminal type with 2 terminals
• Direct replacement format for listed BMW rear brake systems
• Cross-references Beck/Arnley 084-1602 and PowerStop SW-0434 for the same application
• Part number: 2BWS0161

Product Details

Holstein Parts 2BWS0161 is intended for vehicles equipped with a brake pad wear indicator circuit at the rear axle. The sensor mounts in the brake pad assembly and communicates pad wear status to the vehicle warning system, helping maintain accurate brake service alerts. This part number is listed for a wide range of BMW fitments, including rear applications on 2005-2013 BMW 128i, 135i, 328i, 335i, M3, and related models.

Holstein Parts focuses on replacement electrical and sensor components, and the Holstein Parts line is used for service parts that match the original connector style and terminal layout required by the vehicle. If you are replacing a worn brake wear sensor during rear brake service, 2BWS0161 provides the correct connector configuration for the listed BMW applications.

What It Helps Fix

• Brake pad wear warning light staying on after pad service
• Damaged or broken rear brake wear sensor wiring
• Faulty pad wear signal from the rear brake circuit
• Incorrect brake wear alert after rear pad replacement
• Connector mismatch on listed BMW rear brake sensor applications

Installation Notes

Install only on the rear brake position shown in the fitment data. Verify connector shape, terminal count, and vehicle build notes before ordering, especially for models with date restrictions such as 125i through 03/2010 and 325i applications with specific body or engine notes. Replace the sensor during rear brake service when the original wear element is damaged or has triggered the warning system.

• Fits 2008-2013 BMW 128i, Rear
• Fits 2008-2013 BMW 135i, Rear
• Fits 2013 BMW 135is, Rear
• Fits 2007-2013 BMW 328i, Rear
• Fits 2008-2013 BMW M3, Rear
• Fits 2005-2012 BMW 120i, Rear
• Fits 2010-2012 BMW 125i, Rear; To 03/2010
• Fits 2012 BMW 325i, Rear
• Fits 2006-2010 BMW 325i, Rear
• Fits 2011 BMW 1 Series M, Rear
• Fits 2006-2011 BMW 323i, Rear
• Fits 2011 BMW 325i, Rear; To 03/2010, MfrBody Code: E93N, Engine Designation: N52N, Not suitable for Performance Parts
• Fits 2006-2010 BMW 130i, Rear
• Fits 2009-2010 BMW 328i xDrive, Rear
• Fits 2009-2010 BMW 335d, Rear
• Fits 2007-2010 BMW 335i, Rear
• Fits 2009-2010 BMW 335i xDrive, Rear
• Fits 2008-2009 BMW 125i, Rear
• Fits 2007-2008 BMW 328xi, Rear
• Fits 2007-2008 BMW 335xi, Rear
• Fits 2006-2007 BMW 330i, Rear
• Fits 2006 BMW 325xi, Rear
• Fits 2005-2006 BMW 330xi, Rear
• Fits 2005 BMW 325i, Rear; For vehicles with Usable load increase [S100A], MfrBody Code: E90, Engine Designation: N52, Not suitable for Performance Parts
• Fits 2005 BMW 330i, Rear; For vehicles with Usable load increase [S100A], MfrBody Code: E91, Engine Designation: N52, Not suitable for Performance Parts

Quality Assurance

Holstein Parts 2BWS0161 is built as a replacement sensor for the listed BMW rear brake applications and is identified by OE-style connector and terminal specifications for accurate fitment.