I have a set of 550 RC Injectors....they are great except the O rings, cushinon rings and seal rings etc. are cracked. I think that this is why I am getting the check engine code 16 (Fuel Injectors) come up. My question is: What O rings, cushion rings and seal rings do I use? I have a B17a intake manifold.....would I get the seals for that intake manifold???