Can someone identify what size injector this is?

 

This is what I found:

SRT-4 Siemens
FI 11351
45lbs/475cc
Standard 2-1/2"

 

at least they're not pink

 

Correct

If you know how good the PURPLE injectors were you would want some.

 

The "Pink" ones were on the 03 SRT-4 which are called Stage 0. The Black with Blue tip were standard on 04+ SRT-4's are are dubbed Stage 1. The Pinks are rated 527 cc/min and the Stage 1's 577 cc/min. They also have Stage 2 and 3. The stage 3 are the same as stage 2's with more fuel pressure from and adjustable regulator. The stage 2's are rated at 682 cc/min.

I have had them all of them on the Hemi at one time or another for the last 3-4 years. I needed them after the turbo went on. I will be going to the new 80 lb/hr Ford Racing units soon.

They SRT-4 injectors are very good. I have never had any problems with them and neither has anyone I know who are running them. All the SRT-4 and Hemi F/I guys run them.

The ones above look like the ones being used on the new 392 Hemi's based of the SRT-8.