Molex 0039012040 replacements This uses contacts in link , https://www.digikey.com/short/z24qn3
This looks to be a part that sells out pretty quickly below is a list of parts that can be used as replacements . Depending on the mating connector you are using .
Molex part number 0039012045 , Digi-Key part number WM23701-ND , https://www.digikey.com/products/en?keywords=WM23701-ND
Uses contacts in link , https://www.digikey.com/short/z24q5r
Molex part number 0039013042 , Digi-Key part number WM1022-ND , https://www.digikey.com/products/en?keywords=WM1022-ND
uses contacts in link , https://www.digikey.com/short/z24qhd
Molex part number 0039013045 , Digi-key part number WM13487-ND , This one is black in color https://www.digikey.com/products/en?keywords=WM13487-ND
uses contacts in link , https://www.digikey.com/short/z24q4t