1/4" Phenolic insulators 1959 to 1965 Tri-power Engine Compartment In this case

In this case

This blocks off the port for the thermostat/switch that controlled the opening of the end carbs on vacuum linkage cars

1966 Casting code- 9782898

These are the reproduction foam filters with the double AC logo and A193 embossing

Usually I have a quick turn-around

1/4" Phenolic insulators 1959 to 1965 Tri-power Engine Compartment In this caseI have been getting e mails, 2 3 a week, with concerns that carbs are leaking after the motor is shut down. Sometimes the fuel drips into the manifold, resulting in hard starting. Or, if the car sits, it can be hard to start as the float bowls are empty. Here is what is happening Today's Ethanol laced fuel boils at 20 or more degrees lower than straight gasoline. After car is shut off, heat from the motor is absorbed into the carburator a heat sink.