Quoting GSTwithPSI:
I'm not sure whether to take you seriously or not sometimes, G... GM spec plastic VS JDM spec plastic /ubbthreads/images/graemlins/bowrofl.gif
He may not understand it, but there is some truth to the different plastics. Many of the really inexpensive made in China connectors are made thinner, or with a plastic that doesn't hold up as well over time due to heat or other underhood environmental issues. These are usually knockoffs of a connector originally designed by someone else. The original company will have it in a good material, properly designed to meet all OEM requirements, but the knockoff will make it for a fraction of the cost.It may not fit as well, seal properly, or be the right material, but the company generally isn't concerned with that.
And anyone selling a 4 pack of pigtails for $8 is PROBABLY using the made in China knockoffs of the original connector. They don't know it, because they are just getting the pigtails for $.50 each from some Chinese supplier. So it is just a crapshoot as to whether it is a good material, or not.Of course, anyone selling a pigtail for $15 each could still be using knockoffs, and just making more money.
Many companies selling replacement connectors now are providing the knockoffs, not the genuine connectors. Some don't care that they provide substandard parts, and others just don't know the difference.