TE 1674312-1 is indeed incredibly similar, but ultimately not quite the same -- the retention clip is a bit different, and the bumps on the 2nd and 5th top ridges point outwards rather than inwards as is the case with the TE 1674312-1. Thanks for the pointer, though, I might be able to follow up looking for similar parts -- although I'm now worried this I'm dealing with a TE-patent-dodging knockoff of the TE 1674312-1...