6 MFC gaskets: two black Buna-Nitryl rubber gaskets on the left; good for diesel fuel only. The light gray and the three black gaskets with the yellow mark are Viton gaskets, good for both diesel and gasoline.

Two black Buna-Nitryl rubber gaskets on the left, good for diesel only; One light gray and three black gaskets with the yellow mark on the edge, on the right are Viton; good for diesel or gasoline MFC's.