The device for checking injectors is also Chinese. In terms of quality and capabilities, it is no better than the injector from Aliexpress

Thanks for the comparison. Was going to order the ones from Amazon. Not now.

Thank you!!!

Unfortunately Jegs and Summit have been known to sell counterfeit parts. Even some parts from the GM counter is not the original parts that came equipped from the factory. Meaning the parts were subpar.

Great testing video showing poor quality parts!!

Do the Chinese injectors have a bran don them?

Injectors aren't the kind of thing you want to use Chinese parts for... I've never seen anybody have success with them. I'd sooner go to a junkyard and take used injectors, before buying this crap on Amazon.