Spectra Premium Spectra Hd Module Assembly SP6657M Unit is designed to Original Equipment (OE) fit, form and function requirements accomplished by leveraging Spectra Premium's OE fuel system design expertise Product includes detailed installation instructions and wiring harness Includes strainers for smoother installation process and ensures a clean fuel system upon replacement Precision tested fuel level sensor ensures vehicles fuel gauge will provide an accurate reading at any fuel level Tested for voltage, amperage, resistance, pressure, and volume to ensure product performance and quality