The product is a genuine OEM vehicle speed sensor specifically designed for 99-05 Mazda MX-5 Miata NB1 NB2 automatic transmissions. Made by Mazda in Japan, this sensor is a direct replacement part with the manufacturer part number BV8B-21-5H2. It is not a vintage part or a universal fitment item, making it a reliable and compatible component for your vehicle's transmission system.