Please anybody. Can anyone tell me what theses two pieces are called. The gaskets have gone bad but i dont know where to get them. I have the valve cover gaskets but i need these also. Please anyone.

 

That is the pvc part of the valve cover. There is no gasket, just black silicone. Take the bolts out and pry them off carefully, besure to clean them extremly well and clean them off with rubbing alchol or prep solvent and make sure it is dry before putting the silicone on. Do not touch the cleaned mating surfaces, the oils in your hand could cause the silicone not to adhear to the surfaces.
Also be careful when removing the rubber hoses they tend to get brittle.