Standard Ignition ABS Wheel Speed Sensor P/N:ALS420

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$49.99
MPN: ALS420
UPC: 707390493015
Item Package Quantity: 1
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Standard Ignition ABS Wheel Speed Sensor P/N:ALS420
Standard Ignition ABS Wheel Speed Sensor P/N:ALS420
$49.99

Keep your ABS reading wheel speed accurately with the Standard Ignition ABS Wheel Speed Sensor ALS420. It installs as a direct-fit replacement for the rear position on the 1996-1997 Volkswagen Passat, restoring the signal the anti-lock brake system relies on to track how fast the wheel is turning.

  • Rear wheel speed monitoring: senses the rotation of the rear wheel and sends that data to the ABS control module for anti-lock and, where equipped, traction/stability functions.
  • Direct-fit replacement: designed to replace the original rear ABS wheel speed sensor on the listed application.
  • Signs it may need replacing: an illuminated ABS or traction control warning light, or an ABS system that drops out — if a failed sensor at this location is the cause, this unit replaces it.

An ABS wheel speed sensor is a wear- and contamination-prone component; because the same symptoms can stem from wiring, a damaged tone ring, or the control module, diagnose the cause before replacing. When the rear sensor is confirmed faulty, ALS420 provides a clean-fit swap to return the correct wheel-speed input to the brake system.

Interchange: Manufacturer part number ALS420.

Frequently Asked Questions

What does this sensor do?

It monitors the rotation speed of the rear wheel and sends that signal to the ABS control module, which the anti-lock brake and traction control systems use to manage braking.

Which vehicles does the ALS420 fit?

It is a direct-fit replacement for the rear position on the 1996-1997 Volkswagen Passat. Check the Buyer's Guide tab to confirm fitment for your vehicle.

What position is this sensor for?

The ALS420 is cataloged for the rear wheel speed sensor position on the listed application.

What are signs this sensor may need replacing?

An illuminated ABS or traction control warning light, or an ABS system that stops functioning. These signs can have other causes, so diagnose before replacing.

Should I diagnose before installing this part?

Yes. The same symptoms can come from wiring, a damaged tone ring, or the control module, so confirm the sensor is the cause before replacing it.