OE Quality
60-Day Returns

Standard Ignition ALS859 ABS Wheel Speed Sensor - Front Left
Overview of Standard Ignition ALS859 ABS Wheel Speed Sensor
The Standard Ignition ALS859 ABS Wheel Speed Sensor is designed specifically for Mazda Protege models, providing reliable wheel speed data essential for your vehicle's anti-lock braking system. This sensor features a 26-inch harness and a durable square-shaped connector to ensure a secure and precise fit.
- Compatible with Mazda Protege vehicles
- ABS wheel speed sensor with 2-terminal blade type
- Female connector with square shape and 1 connector quantity
- 26-inch (660 mm) harness length for flexible installation
- Mounts directly on the wheel with 2 bolt holes for secure attachment
- Hardware not included
Detailed Product Description
The Standard Ignition ALS859 is an ABS wheel speed sensor engineered to monitor the rotational speed of the wheel on Mazda Protege models. It features a 2-terminal blade type connector with a female connector gender, designed to interface seamlessly with the vehicle’s wiring harness. The sensor’s square connector shape and single connector quantity simplify installation and ensure a stable electrical connection. With a 26-inch (660 mm) harness length, this sensor offers sufficient reach for proper routing and mounting at the wheel location. The sensor mounts securely using two bolt holes, providing a stable and accurate reading necessary for the ABS system to function correctly.
Common Applications and Issues Addressed
- Restores accurate wheel speed data for ABS functionality
- Resolves ABS warning light activation due to faulty sensor
- Eliminates erratic braking behavior caused by sensor failure
- Prevents loss of traction control related to wheel speed sensor errors
- Corrects speedometer inaccuracies linked to wheel speed sensor issues
Installation Notes and Tips
- Ensure the mounting location on the wheel is clean and free of debris before installation
- Verify the connector gender and terminal type match the vehicle’s wiring harness
- Route the 26-inch harness carefully to avoid contact with moving parts or heat sources
- Use the two bolt holes to secure the sensor firmly in place
- Double-check electrical connections for a secure fit to prevent intermittent faults
Quality Assurance and Warranty
Standard Ignition parts are manufactured to meet or exceed OEM specifications, ensuring reliable performance and durability. The ALS859 ABS Wheel Speed Sensor undergoes rigorous quality control testing to maintain consistent functionality. While specific warranty details may vary, Standard Ignition typically offers a limited warranty covering defects in materials and workmanship to provide confidence in your purchase.
| Brand | Standard Ignition |
|---|---|
| Part Number | ALS859 |
| Connector Gender | Female |
| Connector Shape | Square |
| Harness Length - inches | 26 |
| Harness Length - mm | 660 |
| Mounting Location | Wheel |
| Number of Bolt Holes | 2 |
| Terminal Gender | Male |
| Terminal Type | Blade |
This part fits 1 vehicles. Search below:
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 1995 | Mazda | Protege | Front Left |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.