[Functional]: Keep the fuel pump pressure constant, prevent the fuel pump voltage drop and fuel pump amperage overload damage to the vehicle electrical system. [Application]: 12V system, electric fuel pump relay kit with continuous current below 40 amps. [High quality material]: Fuel pump relay kit has excellent water resistance and wear resistance to ensure stable use. [Easy installation]: Each component is colored and coded for easy differentiation. You can install it by following the installation instructions or searching for the relevant installation tutorial. If you have any questions, please contact us. [After sale]: If you have any problems please kindly contact us by logging in your Amazon Buyer Account , Find your order and click Contact Seller we will respond you in one business day.