Triumph 500 intake manifold to head gaskets

These gaskets will fit the manifold to the head on Triumph 350 and 500 models like TR5 and T100. Earlier models used a 1" bore (25.4mm) with 1/4" studs, part number 70-2967. Later heads used a 1" bore (25.4mm) with 5/16" studs, part number 70-6772. Pre unit alloy 500 heads also use part number 70-2967. Manifold gaskets should be matched to the size of the cylinder head port and the manifold bore. Please measure your stud size if unsure. Select the size from the drop down menu. These are made in USA with Interface N-8092, a reinforced cellulose fiber with a nitrile rubber binder. No sealant is required but these are not aluminum core. Priced in pairs.