To be used with manifold application M-9424-A321, and with cylinder head application 289/302/351W, M-6049-J302/K302/L302/L303/Y302/Y303 no EGR. GASKET THICKNESS � .004 = 0.050". NOTES: 1 Synthetic rubber Print-O-Seal� (Fel Pro Inc.) bead around ports provides improved sealing. 2 Redesigned for improved port location and allows mild porting. 3 Teflon coated, steel reinforced. None of the following race quality gasket kits include rubber end seals. Use RTV sealer or production end seals.