Genuine AC Delco For GMC Sierra 1500 1999-2006 Ignition Knock (Detonation) Sensor | Pin Terminal | 10 millimeters / 0.39 inches Threaded End Diameter | Round Connector Shape | Replacement For 1258986

Part: Ignition Knock (Detonation) Sensor Terminal Type: Pin Made From The Highest Quality Materials Designed For Easy Installation Brand New - Sealed in a Box