Standard Ignition ALS421 ABS Wheel Speed Sensor - Rear

Reliable ABS Wheel Speed Sensor for Volkswagen Passat

The Standard Ignition ALS421 ABS Wheel Speed Sensor is designed specifically for Volkswagen Passat models, ensuring accurate wheel speed data for your vehicle's anti-lock braking system. This sensor helps maintain optimal braking performance and vehicle stability under various driving conditions.

• Compatible with Volkswagen Passat models
• Part number ALS421 for precise identification
• Monitors wheel speed for ABS functionality
• Durable construction for long-lasting performance
• Direct replacement sensor for easy installation

Product Details and Functionality

The ALS421 ABS Wheel Speed Sensor from Standard Ignition provides reliable input to the vehicle’s ABS control module by detecting the rotational speed of the wheels. This sensor plays a critical role in preventing wheel lockup during braking by supplying real-time data that allows the ABS system to modulate brake pressure effectively. Designed to meet OEM specifications, this sensor ensures consistent performance and compatibility with Volkswagen Passat vehicles.

Common Applications and Problem Resolution

• Restores ABS warning light functionality by replacing faulty sensors
• Eliminates erratic ABS behavior caused by inaccurate wheel speed readings
• Prevents premature brake wear due to improper ABS activation
• Improves vehicle stability and control during emergency braking
• Resolves traction control system errors linked to wheel speed sensor faults

Installation Notes and Tips

Installation of the Standard Ignition ALS421 sensor is straightforward with basic automotive tools. It is recommended to disconnect the vehicle battery before beginning installation to avoid electrical issues. Ensure the sensor mounting area is clean and free of debris to maintain accurate readings. After installation, verify ABS system operation by checking for warning lights and performing a test drive under safe conditions.

Quality Assurance and Warranty

Standard Ignition parts are manufactured to meet or exceed OEM standards, providing dependable performance for Volkswagen Passat vehicles. The ALS421 ABS Wheel Speed Sensor undergoes rigorous quality control testing to ensure durability and accuracy. This part is backed by a limited warranty, offering coverage against defects in materials and workmanship under normal use.