HomeBrake > SensorsStandard Ignition ALS1639 ABS Wheel Speed Sensor - Front Left
Part #: ALS1639

Standard Ignition ALS1639 ABS Wheel Speed Sensor - Front Left

Front Left
9 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
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OE Direct Replacement — Bolt-on fit, no modifications needed
Fitment: Mazda, CX-9
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Fast Shipping — Most orders ship same business day before 1pm CST

Reliable ABS Wheel Speed Sensor for Mazda CX-9

The Standard Ignition ALS1639 ABS wheel speed sensor is designed specifically for Mazda CX-9 models, providing accurate wheel speed data essential for your vehicle's anti-lock braking system. This sensor helps maintain vehicle stability and control by monitoring wheel rotation.

  • Compatible with Mazda CX-9 models
  • Part number ALS1639 for precise identification
  • Measures wheel speed for ABS functionality
  • Durable construction for long-term use
  • Direct replacement sensor for OEM fit and performance

Product Details and Functionality

The Standard Ignition ALS1639 ABS wheel speed sensor is engineered to deliver consistent and reliable performance by accurately detecting the rotational speed of the wheels on Mazda CX-9 vehicles. This sensor plays a critical role in the anti-lock braking system by sending real-time data to the vehicle’s electronic control unit (ECU), which helps prevent wheel lockup during braking. The ALS1639 sensor is manufactured to meet or exceed OEM specifications, ensuring proper fitment and function without the need for modifications.

Common Applications and Problem Resolution

  • Restores ABS warning light functionality on Mazda CX-9
  • Eliminates erratic or inaccurate wheel speed readings
  • Prevents ABS system malfunctions and braking issues
  • Addresses traction control and stability control alerts
  • Resolves inconsistent braking performance related to sensor failure

Installation Notes and Tips

Installation of the Standard Ignition ALS1639 sensor requires basic automotive tools and mechanical knowledge. Ensure the vehicle is safely lifted and supported before beginning. Disconnect the battery to prevent electrical shorts. Remove the old sensor carefully to avoid damaging the wheel hub or wiring harness. Clean the mounting area before installing the new sensor to ensure accurate readings. After installation, verify sensor operation by checking for ABS warning lights and performing a test drive.

Quality Assurance and Warranty

Standard Ignition parts are manufactured to meet strict quality standards, providing reliable performance for your Mazda CX-9. The ALS1639 ABS wheel speed sensor undergoes rigorous testing to ensure durability and accuracy. This part is backed by a limited warranty against defects in material and workmanship, offering peace of mind with your purchase.

BrandStandard Ignition
Part NumberALS1639
Connector GenderFemale
Connector ShapeRectangular
Harness Length - inches40.5
Harness Length - mm1028.7
Mounting LocationSpindle
Number of Bolt Holes1
Terminal GenderMale
Terminal TypeBlade

This part fits 9 vehicles. Search below:

YearMakeModelDrive TypePositionNotes
2015MazdaCX-9Front Left
2014MazdaCX-9Front Left
2013MazdaCX-9Front Left
2012MazdaCX-9Front Left
2011MazdaCX-9Front Left
2008MazdaCX-9AWDFront Left
2008MazdaCX-9FWDFront Left
2007MazdaCX-9AWDFront Left
2007MazdaCX-9FWDFront 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:

2ABS16705320975S109527169272-10292ABS1728ABSC20088ARA2078L2064373XC

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.