This 1956-1974 Corvette heat riser valve gasket can also be used on the 1975-1979 heat riser valves as a replacement. This heat riser gasket has a measures 2 3/4 inch center to center bolt holes. This gasket will also fit the 1956 Corvette 3 bolt flat exhaust flange.
Exact Replacement for OE - 3732426, 1345198
