Standard Ignition ALS203 Vehicle Speed Sensor - Rear or Rear Center

Vehicle Speed Sensor for Dodge Rear Axle Applications

Standard Ignition ALS203 is a vehicle speed sensor built for rear axle applications on select Dodge trucks, vans, and SUVs. It uses a sealed design, insulated copper windings, and a magnetic circuit engineered to deliver a steady signal across changing driving conditions.

Compatible With 1998-2005 Dodge Ram 1500, Ram 2500, Ram 3500, Dakota, Durango, and Ram Van rear axle applications, this ALS203 sensor is a direct-fit option for vehicles that need accurate speed signal input. The Standard Ignition ALS203 is also a practical replacement when diagnosing speedometer or transmission-related signal issues on Dodge Ram and Dakota platforms.

Key Features

• Vehicle speed sensor for rear wheel or rear axle mounting locations
• Male connector with 2 terminals and oval connector shape
• Bolt-mount design with 1 bolt hole for secure installation
• External and internal nitrile rubber oil seals help support leak-resistant operation
• High-temperature insulated copper windings support durability in demanding conditions
• Magnetic circuit design helps maintain a consistent output signal
• 100% end-of-line tested for signal amplitude and frequency

Detailed Description

Standard Ignition ALS203 is engineered as a replacement vehicle speed sensor for rear-mounted applications on Dodge Ram 1500, Ram 2500, Ram 3500, Dakota, Durango, and Ram Van models. The sensor’s sealed construction helps protect internal components, while the magnetic circuit and insulated windings are built to maintain signal integrity during normal road and load conditions. This part number, ALS203, is a fitment-focused solution for vehicles that rely on a stable speed signal for drivability and system operation.

This part cross-references Dorman - OE Solutions 970-024 for the same application.

What This Sensor Helps Address

• Erratic or inoperative speedometer readings
• Vehicle speed signal loss to the transmission control system
• ABS or drivetrain faults related to rear speed input
• Intermittent signal output from a worn rear axle sensor
• Leak concerns at the sensor mounting point

Installation Notes and Tips

• Verify the mounting location before ordering: rear, rear center, or mounted on the rear axle depending on application.
• Confirm connector style, terminal count, and bolt-mount configuration match the original sensor.
• Inspect the mounting surface and wiring connector for corrosion or damage before installation.
• Use the vehicle’s exact year, model, and notes to confirm whether the application is listed as sensor only or w/o shield.

Quality Assurance

Standard Ignition tests this sensor at the end of the production process to verify signal amplitude and frequency. The ALS203 is built with sealed nitrile rubber components, copper windings rated for elevated temperatures, and a magnetic circuit intended to support reliable output in real-world driving conditions.