I recently had all 8 replaced. Now I can look under the hood at the driver side valve cover and easily see an ISUZU decal on the cover that gives all the engine info. I have owned the truck since it was new, and 117k later I just noticed this. Is it possible there was wiring or a hose that ran across there covering it up that got rerouted or removed during injector changeout? Just seems odd that after 2.5 years of looking under the hood you notice something that you have never seen before.

its clean now... and you looking closer since it was worked on.