Hella 230040721 ABS Wheel Speed Sensor OE-Quality - 6PU

The Hella 230040721 (Hella part family: 6PU 230 040-721) is an OE-quality ABS wheel speed sensor engineered to deliver accurate wheel rotational speed data to your vehicle's anti-lock braking system control unit. As a direct-fit replacement, this sensor restores proper ABS, traction control, and stability control system functionality.

How It Works:

Mounted directly above the tone ring (pulse wheel) on the wheel hub or drive shaft, the sensor detects variations in the magnetic field created as the ring rotates. This generates an alternating current signal that the ABS control module uses to monitor individual wheel speeds and modulate braking pressure to prevent wheel lockup.

Key Features:

• Manufactured to OEM specifications for precise fit and reliable performance
• Part of Hella's 6PU 230 040 series of wheel speed sensors
• Built to withstand harsh under-vehicle conditions including heat, moisture, and road debris
• Direct OE-style replacement — no modification required
• Restores accurate wheel speed signaling to eliminate ABS warning lights caused by a failed sensor
• Engineered and produced by Hella, a globally recognized OEM supplier to major vehicle manufacturers

Hella is one of the world's leading automotive suppliers, with decades of experience manufacturing sensors and electronics as original equipment for top-tier automakers. The 230040721 wheel speed sensor brings that same OEM-level engineering expertise to the independent aftermarket.