Aeroquip FCU0406 #4 Startlite Hose 6′ Air Brake Compressor Discharge Hose Connec. EST, MON to FRI. Brake > Electrical Connectors > Air Brake Compressor Discharge Hose Connector. Aeroquip FCU0406 #4 Startlite Hose 6. Aeroquip – FCU0406 – #4 Startlite Hose 6′ – Hose – Startlite Racing Hose – 4 AN – 6 ft – Braided Nomex / Kevlar – AQP Smooth Bore – Black – Each.