TSRM has alot of answers for simple questions.
THIS is an electronic parts catalog he made that has a ton of part numbers.
Personally I didnt want to waste time looking for the part or ask toyota for it. For me its really not a big deal so I just hooked up the EGR valve straight to the manifold without a gasket. The one for the block connection is good to have/get though.
To make it easier here is the link to the diagram:
Exhaust Gas Recirculation System