New OEM yoke washer for the manifold. This is the extra thick washer used on the intake and exhaust manifolds. Thickness= .25", O.D.= .90". Will fit on Datsun 240Z, 260Z, 280Z, and 280Z.
Also available is a stepped washer for use with aftermarket headers and intake manifolds. Stepped washers are sold in a set of 6. See separate listing for more details.