I think there is a larage rubber o-ring type gasket in there. To be certain, download the generation 3 manual at the top of this forum and look at the section for the engine your car has (I4 or V6). For the I4, it is section EG1, page 286. For the V6, it is section EG2. Not sure of what page for the V6 engine, so you will just have to skim over the pages until you find the section on engine lubrication and look further in to that section.
Mike