Delphi SS21025 ABS Wheel Speed Sensor - Rear

Delphi Rear ABS Wheel Speed Sensor

Delphi SS21025 is a rear ABS wheel speed sensor for select BMW X5 and BMW X6 applications. It is built as a standard replacement sensor with OE-level calibration to deliver accurate wheel speed readings for the anti-lock brake system.

Use this Delphi ABS wheel speed sensor when you need a direct-fit rear sensor for BMW X5 and BMW X6 models covered by the listed fitment.

Key Features

• Rear ABS wheel speed sensor for brake and stability system input
• Standard replacement grade
• Black oval connector with 2 male pins
• Wiring harness included
• Package includes ABS wheel speed sensor and instruction sheet
• OE-standard testing and calibration for consistent signal output

Detailed Description

Delphi SS21025 is engineered for rear wheel speed monitoring in compatible BMW brake systems. Delphi validates its sensors to OE standards and calibrates them for accurate readings, helping maintain proper ABS operation and reducing repeat repairs caused by signal errors. This part cross-references Standard Ignition ALS1787 for the same application.

Compatible With: Fits 2007-2018 BMW X5, rear. Fits 2008-2019 BMW X6, rear. Common search terms include rear ABS wheel speed sensor for BMW X5, rear wheel speed sensor for BMW X6, and Delphi SS21025 replacement sensor.

What It Helps Fix

• ABS warning light caused by a failed rear wheel speed sensor
• Erratic or missing wheel speed signal
• Traction control or stability control faults tied to wheel speed input
• Brake system diagnostic trouble codes related to rear sensor performance
• Intermittent ABS operation from worn sensor wiring or connector issues

Installation Notes

Install at the rear wheel position only. Verify connector shape, terminal count, and harness routing before installation. Inspect the tone ring, wheel bearing area, and surrounding wiring for damage that could affect sensor readings. Follow the included instruction sheet and clear fault codes after installation.

Quality Assurance

Delphi backs this sensor with OE development and product validation methods. Each sensor is tested and calibrated to OE standards to support accurate readings and dependable brake system performance.