Aeroquip FCC0420 #4 Teflon Hose 20′ Air Brake Compressor Discharge Hose Connecto. EST, MON to FRI. Brake > Electrical Connectors > Air Brake Compressor Discharge Hose Connector. Aeroquip FCC0420 #4 Teflon Hose 20. Aeroquip – FCC0420 – #4 Teflon Hose 20′ – Hose – PTFE Racing Hose – 4 AN – 20 ft – Braided Stainless / PTFE – Natural – Each.