Thermostat Gasket, 1957-64 Oldsmobile, 1949-53 Buick Thermostat housing gasket for 1957-58 Oldsmobile 2 barrel carb and J-2 equipped engines, and all 1959-64 Oldsmobile 371 and 394 V8s with 2 barrel carb. Also used on all 1949-53 Buick straight 8 engines.