Enhance parking safety with this 4-piece set of reverse backup sensors, engineered to replace OEM parts 4F23-15K859-AA and 3F2Z15K859-BA. Designed for seamless integration, these sensors deliver reliable obstacle detection during reverse maneuvers, reducing collision risks in tight spaces. Utilizing advanced ultrasonic technology, they provide audible alerts to improve situational awareness. Built with durable, weather-resistant materials, the sensors ensure long-lasting performance in rain, snow, or dust. Compatible with a wide range of full-size trucks, vans, and SUVs, the set includes all necessary components for straightforward installation without wiring modifications.