Nozzle adapter- same size barbs (079980-01) - $4.74

The rubber hoses connect here.

Both fittings are the same size.

Adapts nozzle to the rubber hoses.

The airline that fits the black nozzle adapter with the same sized barbs is # Airline-Black.

The fuel line that fits the black nozzle adapter with the same sized barbs is # Fuel-line-Black.

NOTE:.... There is another black nozzle adapter that has the same appearance as this one , except that one fitting has a larger barb for the air delivery (104456-01 duplex nozzle adapter). These do not interchange. If you have the duplex nozzle adapter use the Airline-tan.