Aeroquip FCU0420 #4 Startlite Hose 20′ Air Brake Compressor Discharge Hose Conne. EST, MON to FRI. Brake > Electrical Connectors > Air Brake Compressor Discharge Hose Connector. Aeroquip FCU0420 #4 Startlite Hose 20. Aeroquip – FCU0420 – #4 Startlite Hose 20′ – Hose – Startlite Racing Hose – 4 AN – 20 ft – Braided Nomex / Kevlar – AQP Smooth Bore – Black – Each.