Requires 56 series female terminal & connector as originalLectric limited now offers accurate temperature sending units. months of research were devoted to this project in order to provide our customers with sending units that have the original-type terminal connection, housing and resistance (thermistor); resulting in an accurate gauge reading. they screw right into the 1/2" (not 3/8") pipe thread hole (as original).Both auto part's stores and gm/delco do sell replacement temperature sending unit, but they do not produce an accurate gauge reading in vintage cars. this is because sending units from an auto part's store and even gm, are only a generic replacement; often requiring a new, matching gauge or re-calibration of your original gauge.Please note: the terminal connections on all our sending units are exactly as-original.
