Standard Ignition ALS449 ABS Wheel Speed Sensor - Rear

Reliable ABS Wheel Speed Sensor for BMW 128i, 323i, 325i, 328i

The Standard Ignition ALS449 ABS Wheel Speed Sensor is designed to provide accurate wheel speed data for BMW vehicles including the 128i, 323i, 325i, and 328i models. This sensor ensures proper ABS function and vehicle stability by delivering precise signals directly from the spindle mounting location.

• Direct bolt mount installation with one bolt hole for secure attachment
• Includes a 39-inch (1000 mm) wiring harness for flexible routing
• Female connector with a round shape and one connector quantity for easy connection
• Two male terminals with pin-type design for reliable electrical contact
• Color finish in black, gray, and white for corrosion resistance and durability
• Wiring harness included; mounting hardware and dust shield not included

Detailed Product Description

The Standard Ignition ALS449 ABS Wheel Speed Sensor is engineered to meet the specific requirements of BMW 128i, 323i, 325i, and 328i models. It mounts directly to the spindle using a bolt mount method with a single bolt hole, ensuring a secure and precise fit. The sensor features a female connector with a round shape and includes a wiring harness measuring 39 inches (1000 mm) in length, allowing for straightforward installation and connection to the vehicle’s ABS system. The two male pin terminals provide a stable electrical interface, critical for accurate wheel speed data transmission. The sensor’s black, gray, and white finish offers protection against environmental factors, contributing to long-term reliability.

Common Applications and Issues Addressed

• Restores ABS functionality by providing accurate wheel speed data
• Eliminates ABS warning lights caused by faulty or damaged sensors
• Improves vehicle stability and braking performance on BMW 128i, 323i, 325i, and 328i
• Resolves intermittent ABS sensor signal loss or erratic readings
• Prevents potential drivetrain and traction control system errors

Installation Notes and Tips

• Ensure the spindle mounting location is clean and free of debris before installation
• Use the existing bolt hole for direct bolt mount; mounting hardware is not included
• Verify connector orientation: female connector with round shape mates with male terminals
• Route the 39-inch wiring harness carefully to avoid contact with moving parts or heat sources
• Test sensor operation after installation to confirm proper ABS system function

Quality Assurance and Warranty

Standard Ignition parts are manufactured to meet or exceed OEM specifications for fit, form, and function. The ALS449 ABS Wheel Speed Sensor undergoes rigorous quality control to ensure reliable performance in BMW 128i, 323i, 325i, and 328i vehicles. While specific warranty details may vary, Standard Ignition typically offers a limited warranty covering defects in material and workmanship to provide confidence in your replacement part.