The part# for oe Acura/Honda valve cover gasket is: Honda/Acura 12341-RCA-A01, I have to call dealer and check price. The gasket fit 2004 Honda Accord Ex V6 model and my 2004 Acura MDX
Some Honda engines also have rubber seals at the bottom of the spark plug tubes. Removing the rocker assemblies is necessary to replace those seals. I don't know if this is one of them.