Up for auction is a NOS Motorctaft Carburetor Choke Thermostat which fits the following:

FORD 

 MERCURY

Box Part # = E4PZ-9848-A / CM-4230

Part is stamped 696-4A  77-4  2020A

Listed as fitting Weber 740 / 32DFTA Carburetors

Please check part #'s and review picture for your particular application