NOS cork thermostat gasket for 1940-1950 Olds 6, and 1940-1948 Olds 8. This is a very visible part of this engine, right on top of the head. Having a correct cork gasket along with some Aviation form-a-gasket will make for a perfect restoration!
This gasket is slightly oval shaped. About 3.60" bolt center to center.
GM part number 411047
RM Warehouse Location: R12