Looks the same as mine, I also had the non-marine injectors and they were the same, no problem sealing. Shouldn't be a size difference between the marine and non-marine injector size, could be wrong never. Never seen the marine ones.

 

Hey so you figured this out?

Have any photos of them installed?

Did you pop off the plastic end cap? I tried that on one of my injectors and it slides in much further. Butbdobi really need to do that?

 

Don't pop the cap off. The pics in this thread show the correctly installed.

 

Well ****, my injectors are too short for the LSX-R and the fast "OE style" fuel rail.

 

Here is what I'm dealing with. And yes, I have proper fitting lower o-rings installed.

Truck injector height:


LS2 injector height:





So when I tighten down the fuel rail and it bottoms out on the LSX-R intake, there is still 4-5mm of up and down play where the injector doesn't seat all the way.
Seems the LSX-RT fuel rail fitment has accounted for slightly shorter truck height injectors.