never had any issues with any of my genuine E3Ds - all 5 of them.

https://www.amazon.com/gp/product/B01MC … &psc=1

I would not recommend buying the kits unless you think you will do this a lot. And you might need a cramping tool to make it right.

Actually I think buy a fan is a good idea, cost similar, but you get a better fan. the fan came with E3D clone is not good. I would recommend 12V 40mm ball bearing that can do >8cfm (and ideally but not necessary have to be quite fan <33dB-A).

You can reuse a set of cables like the breadboard jumpers which have the right pin headers to allow easy connection, splice them in to the cable with a dose of heat shrink and bobs your uncle.

You could buy a fan with the correct fitting, they are aplenty on the world biggest technology dump site... I bought 12 x 12v fans for as little as £5 all inclusive.

As for fans themselves, a brushless 12v in any language is 12 v brusheless, however, the current it requires and if it needs a 3rd wire for feedback, these are factors.

So remember what carl_m1968 said, it may be a JST variant... and with that I will add... If you look hard enough, you often find the same spec as a generic.

Good luck, the internet is a minefield of people clawing for your dollars so don't be reeled in by the first offer, nor by the offer that is so amazing you are buying it as we speak, STOP... Butter offers are very common phishing scams, never ever working when you buy the product and in the case of USB's some scams are the product themselves because by the time you discover that its a dud product, the vendors long gone.

That's the problem. I can't find them. Not exactly sure what search terms to use

Being Chinese they are probably a JST variant.