Delphi SS21578 ABS Wheel Speed Sensor

The Delphi SS21578 is an OE-quality ABS wheel speed sensor designed to deliver accurate, reliable wheel speed data to your vehicle's anti-lock braking system. As a trusted original equipment supplier to the automotive industry, Delphi engineers each sensor to meet or exceed OEM specifications, helping restore factory-level braking performance and system integrity.

ABS wheel speed sensors play a critical role in modern vehicle safety — continuously monitoring wheel rotation and transmitting data to the Powertrain Control Module (PCM) to support anti-lock braking, traction control, and electronic stability control systems. A failed or degraded sensor can trigger ABS warning lights, store fault codes, and compromise braking performance.

Key Features:

• Built to meet or exceed OE requirements and testing standards for dependable ABS performance
• Consistent digital output engineered for maximum signal-to-noise ratio
• Plated connector pins to resist corrosion and protect against failure caused by short circuits
• OE-matching wire lengths, mounting hardware, and connector design for straightforward installation
• Weather-resistant construction to withstand moisture, dirt, vibration, and extreme temperature fluctuations
• 100% tested pre- and post-production to ensure peak performance out of the box
• Designed to help prevent mechanical damage to the sensor ring and tone wheel

The Delphi SS21578 ABS speed sensor is a direct-fit replacement that installs quickly without modification, making it a reliable choice for professional technicians and experienced DIYers alike.