Delphi SS21420 ABS Wheel Speed Sensor - Rear Left

Delphi Rear Left ABS Wheel Speed Sensor

Delphi SS21420 is a rear left ABS wheel speed sensor for select Honda Civic applications. It is built as a standard replacement sensor with OE-focused validation to support accurate wheel speed readings for the anti-lock brake system.

Compatible With 2016-2021 Honda Civic, rear left. This Delphi ABS wheel speed sensor includes the wiring harness and uses a rectangular female connector with 6 male terminals for the specified rear left position.

Key Features

• Part number: SS21420
• ABS wheel speed sensor for the rear left position
• Standard replacement grade
• Wiring harness included
• Rectangular 2-connector design
• Female connector with 6 male terminals
• Wiring harness length: 571
• Package contents: ABS wheel speed sensor and instruction sheet

Detailed Description

Delphi SS21420 is engineered for 2016-2021 Honda Civic rear left applications and is part of Delphi’s sensor lineup developed with OE validation methods. The sensor is tested and calibrated to OE standards to help deliver consistent wheel speed data to the ABS system, which is critical for proper brake control and system communication. If you are replacing a worn or faulty Honda Civic rear left ABS sensor, this part number provides a direct-fit service replacement for the listed vehicles.

This part cross-references Standard Ignition ALS3004 for the same application.

What This Part Helps Address

• ABS warning light caused by a failed rear wheel speed sensor
• Erratic or missing wheel speed signal at the rear left wheel
• ABS system fault codes related to wheel speed input
• Brake control issues tied to inaccurate sensor readings
• Replacement needs after sensor wiring or connector damage

Installation Notes and Tips

Install SS21420 at the rear left position only on the listed Honda Civic applications. Verify connector shape, terminal count, and harness routing before installation. Inspect the tone ring, wheel bearing area, and nearby wiring for damage or contamination that could affect sensor output. Follow the included instruction sheet and confirm all connections are fully seated before clearing diagnostic trouble codes.

Quality Assurance

Delphi backs this sensor with OE development and product validation practices, and each unit is tested and calibrated to OE standards for accurate readings. That focus on calibration helps reduce repeat repairs and supports dependable ABS performance on the specified Honda Civic applications.