Sierra International 781-625-035P Scratch Resistant Premier Pro Gauge, 35 MPH GPS Speedometer, White, 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