Delphi SS21581 ABS Wheel Speed Sensor - Rear Left

Delphi Rear Left ABS Wheel Speed Sensor

Delphi SS21581 is a standard replacement ABS wheel speed sensor for the rear left position on select Honda and Acura applications. It is built from Delphi’s OE-focused sensor program and calibrated to OE standards for accurate wheel speed readings.

Use this ABS sensor for 2003-2008 Honda Pilot rear left and 2001-2006 Acura MDX rear left applications. The SS21581 includes the sensor, wiring harness, and instruction sheet for a direct replacement service.

Key Features

• Part number: SS21581
• ABS wheel speed sensor for the rear left position
• Standard replacement grade
• 1 connector with orange housing
• Rectangle connector shape, male connector and male terminals
• 2 terminals
• Wiring harness included; harness length 1205
• Package contents: ABS wheel speed sensor and instruction sheet
• Cross-reference: Standard Ignition ALS794

Detailed Description

Delphi SS21581 is an ABS wheel speed sensor engineered for rear left fitment on 2003-2008 Honda Pilot and 2001-2006 Acura MDX models. Delphi validates and calibrates its sensors to OE standards to help deliver consistent wheel speed signal output for the ABS system. This part number, SS21581, is a practical OE-style replacement for vehicles that need accurate rear wheel speed input to support braking system operation.

For buyers searching for a rear left ABS wheel speed sensor for Honda Pilot or Acura MDX, this Delphi sensor provides the correct connector style, terminal layout, and included harness configuration for the listed applications.

What It Helps Address

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

Installation Notes and Tips

Confirm rear left position, connector style, and harness routing before installation. Inspect the tone ring, wheel bearing area, and nearby wiring for damage or contamination that could affect signal quality. Follow the included instruction sheet and verify proper sensor seating and secure harness routing after installation.

Quality Assurance

Delphi backs its sensor portfolio with OE development and product validation methods. Sensors are tested and calibrated to OE standards to support accurate readings and reduce repeat repairs.