Sierra International 781-683-080P Scratch Resistant Arctic Gauge 80 MPH GPS Speedometer, 3" Use Sierra GPS antenna (69053P, 68982P or 68755P sold separately) or connect to an existing NMEA 0183 GPS device - connectors included Before ordering, please verify this is the correct part for your application. For assistance, please call sierra's Tech support at 1-877-663-8396 All Sierra parts qualify for and are covered under Sierra's industry leading customer satisfaction warranty