This is a 12 volt electric choke thermostat. This is a replacement part for any Edelbrock carburetor or Competition Series Carter AFB carburetor that already has an automatic choke. This will fit and can be used to convert the earlier style Carter AFB carburetors that used a hot air tube to heat up the automatic choke.
This is NOT a conversion for manual choke carburetors.
Replaces Edelbrock 1474