Delphi SS20784 ABS Wheel Speed Sensor - Rear

Delphi Rear ABS Wheel Speed Sensor SS20784

Delphi SS20784 is a rear ABS wheel speed sensor built for precise wheel-speed signal reporting in BMW braking and stability systems. It is a standard replacement part for select BMW 320i, 328i, 335i, 428i, 435i, M235i xDrive, M4, and ActiveHybrid 3 applications.

Key Features

• Rear ABS wheel speed sensor for brake and stability control input
• Wiring harness included with a 590 mm harness length
• Black oval connector with 1 connector, 2 terminals, male connector and terminal ends
• Standard replacement grade for OE-style service work
• Package contents include the ABS wheel speed sensor and instruction sheet
• Delphi OE development and product validation methods support accurate sensor output
• Tested and calibrated to OE standards to help reduce comebacks

Detailed Description

Delphi SS20784 is engineered for rear axle wheel-speed monitoring on BMW platforms that rely on accurate ABS signal input. Delphi validates its sensors to OE standards and calibrates them for consistent readings, helping maintain proper communication with the vehicle’s braking and traction systems. This part cross-references Standard Ignition ALS3509 for the same application.

Compatible With 2012-2015 BMW 328i, rear; 2013-2015 BMW 320i, rear; 2012-2015 BMW 335i, rear; 2014-2015 BMW 428i, rear; and other listed rear-position BMW applications. The Delphi SS20784 is also referenced by part numbers 5S13313 and ABS3509.

What It Helps Address

• ABS warning light caused by an erratic rear wheel speed signal
• Traction control or stability control faults tied to rear sensor input
• Loss of wheel-speed data affecting braking system operation
• Intermittent sensor readings from a worn or damaged rear sensor
• Diagnostic trouble codes related to rear ABS wheel speed monitoring

Installation Notes and Tips

Install at the rear position only on the listed BMW applications. Verify connector shape, terminal count, and harness routing before installation. Inspect the tone ring, wheel bearing area, and wiring path for damage or contamination that could affect sensor performance. Follow the included instruction sheet and confirm the sensor is fully seated and secured before clearing fault codes.

Quality Assurance

Delphi backs this sensor with OE-focused development and validation practices. Each sensor is tested and calibrated to OE standards to support accurate readings and consistent service results.