Air Horn Valve Solenoid Air Valve; 175 PSI Max. Pressure; Vortex 4 12V Air Solenoid; Inlet Brass Fitting For 1/4 in. OD Air Tube; Outlet 1/4 in. M NPT; Orifice 4mm; FEATURES: Standard Chrome Cylindrical Air Horn Solenoid Valve Chrome-Plated Body 0.125 in. Inlet Compression Fitting For 0.25 in. Air Line Two-Wire Hookup Vortex 4 Series solenoids are perfect for any basic air valve need. Great for both air horns and air suspension systems. These valves are chrome finished and include brass compression inlet fitting for 0.25 in. O.D. tube. Kleinn automotive air horns offers complete air horn kits, train horns, roof mount truck horns, air systems kit accessories and off road lift kits.