Injector Question

[CeJay]

Wasn't exactly sure where to post this.

Have some old injectors which were taken out of my car when I upgraded, bit mystified by them, 4 are purple with UJ written on the side. and the part number

JE528211

A46-00

The two grey ones say

JE503323

A46-00

Car never had any issues with the injectors, I'm assuming they're the same? The one other difference is the two grey ones have the number 2 against them, and jecs on the side instead of UJ

see pic. I'd just like to confirm it, as I want to sell them and I'm assuming a buyer will question me on this.

I'm asssuming they are around 370cc injectors or so. Came out of a r32 spec 25de-t

[wolverine]

the grey ones are just older injectors and therefore have discoloured a bit.