injector colors identifying injectors

[Blitzed95Eclips]

I was wondering if you guys know what gray top injectors are. I found a set on a fuel rail that was labeled 4g63. Thanks for the help.

 

[TSi95AWD]

Gray tops are 450's.

 

[stevetrbp]

Blue tops are 450s, it should say in real small leters on the top of the injector where the clip is.

 

[Blitzed95Eclips]

so both are 450s?

 

[echo]

not that i know of. they could be aftermarket injectors or stock non turbo injectors. i know the 450s are blue top (i think black top too).

 

[9DTSiAWD]

grey tops are 390cc injectors off a non-turbo. dont quote me on that one. that is just what i have herd.