1966 Center Carb Throttle Shaft. Tri-power Engine Compartment Phenolic has a "high coefficient

Phenolic has a "high coefficient of heat transfer

These are the air cleaners studs for the large 1957 air cleaner

Now these pumps are often made in China or Mexico

not a generic piece

Plese specify below if your tripower has the spacers or not as it effects the length of the tubes

1966 Center Carb Throttle Shaft. Tri-power Engine Compartment Phenolic has a "high coefficientExcellent quality, fits perfectly. New brass screws included. The center carb shaft is often worn, resulting in inconsistent idle because of vacuum leaks. New shaft and new arm resolves the problem of a loose arm which is common. Shaft also fits newer 2bbl. Rochester carbs.