Dumb injector o ring question...sorry
 

I am in the process of replacing the 6 intake gaskets on the passenger side of the motor. While removing stuff I pulled off the fuel rail and pulled up and pulled all three injectors out. Injectors are fine but I want to replace the bottom o rings before going back in. . My question is, why are there 3 regular o rings in the kits that I bought from Pelican? I understand the one on the bottom, and the one for the top if I was going to replace it, But what about the third o ring. Also, do I really need the new yellow hat and the skinny gray plastic ring? i cannot find much info on replacing the injector o rings. Please forgive me, I'm learning as I go along. BTW, in the 7 years that I have owned my car the hardest thing I have ever done on the car is trying to remove the fused paper intake gaskets on the head!! Gaskets from Hell. But, slowly getting them off. I am getting all vacuum leaks fixed before I move on to other problems. Thanks, Nick

If you remove an o-ring, replace that o-ring.
If you remove the yellow hat, replace the yellow hat.
If your injectors don't use the skinny gray plastic ring, don't worry about it.

Thanks!!