The Dorman 306-018 Secondary Air Injection Pump is designed for Mercedes-Benz models and replaces OE/OEM part number 0001405185. This pump does not include a pulley and does not come with mounting hardware. However, it does come with a limited lifetime warranty, providing assurance of its quality and durability. This pump is a reliable option for ensuring proper secondary air injection in your vehicle, making it an essential component for maintaining emission control systems in Mercedes-Benz models.