Primary Role: It safeguards vital under-carriage components (such as the engine oil pan, gearbox, and radiator) from destructive road debris, mud, water, rocks, and uneven terrain. Aerodynamics: Smooths out the airflow beneath the car, which helps reduce drag and marginally improves overall fuel efficiency. Compatibility: This specific plate style is designed for popular vehicles like the Nissan NV200, Livina, Tiida, and Sylphy.