This sensor has been discontinued by AC Delco and GM but now supplied by a reputable "after market" manufacturer and made to the same specs as the original was designed from. The OE part number from GM was 1609968 and the AC Delco short number was 213-188. Fits Cadillac Deville, Seville and El Dorado with EFI - 1976 1977 1978 1979 1980

NOTE: GM used two of these same sensors on these vehicles for both applications, one measuring water coolant and the other for air temperature.