Exhaust Manifold Pipe Flange Gasket Remflex 280Z 280ZXNEW Remflex exhaust manifold gasket for Datsun 280Z and 280ZX 1975 1983 (non turbo). This gasket goes in between the exhaust manifold and the downpipe. This exhaust gasket is for use with 10mm studs, 240Z and 260Z use smaller 8mm studs on the manifold. *Remflex material: Remflex Performance Promise Seals Warped Flanges: Remflex exhaust gaskets come in a standard 1 8 inch thickness and are designed to crush 50%. This allows them to fill gaps in the