OEM Delphi coolant temperature sensor connector. Available as a "DIY" kit where you crimp the pins onto your wires and assemble the connector yourself, or pre-assembled/crimped with a 6" tail ready to be spliced onto your existing wiring.
Great for fixing the common problem of broken latches on the temp sensor connectors.
Fits all late model GM coolant temperature sensors. All years Duramax, small block V8, etc.