We know why you’re here. You’re looking for the biggest, baddest horn on planet earth. Guess what? You found it! The KM-135 Air Horn has no business being on a road vehicle. This horn is designed for battleships up to 656 ft. in length. BATTLESHIPS. Yeah. Aircraft carriers, that sort of thing. This is as deep and thundering of a sound we can offer. This is epic-tier horn blasting, not for beginners.  We pair the Battleship Horn with an ample 5-gallon 8 port air tank. This tank was purpose-built for high-flow applications. All those extra ports mean room for add-ons like a tire inflation kit, air suspension, or whatever your pneumatic needs may be.  Powering the whole thing is our heavy-duty HornBlasters 1NM compressor! It has plenty of power to fill this 5-gallon tank from 110-150 in roughly 2 minutes (± 10 sec.)! Sheeeeeeeeeeeeesh! Super rugged construction made from cast marine aluminum Super loud – 143dB at only 120 PSI Can be heard for up to 2.3 miles Part Number: HK-BS135-544K Operating Pressure: 150 PSI Restart Pressure: 110 PSI Voltage: 12-Volt DC Horn: BS135 Battleship Horn Horn Length: 42″ (1066.8 mm) Horn Width: 20″ (508 mm) Horn Height: 20″ (508 mm) Horn Weight: 45 lbs (14Kg) Horn Material: Cast Aluminum Air Tank: HornAir 5-gallon 8 port air tank Tank Length: 20.5″ (520.7 mm) Tank Diameter: 9.5″ (241.3 mm) Tank Height: 11.5″ (292.1 mm) (With Legs) Tank Weight: 20 lb (9.07 Kg) Tank Ports: x7 1/2″ NPT, x1 3/4″ NPT Max amperage: 25 Amps Maximum duty cycle: 100% @ 100 PSI Flow Rate @ 0 PSI: 1.75 CFM Maximum working pressure: 200 PSI Compressor length: 10.75″ (273.05 mm) Compressor width: 4″ (101.6 mm) Compressor height: 6.75″ (171.45 mm) BATTLESHIP HORN (KM135) 1/2″ NPT BLACK WIDOW STAINLESS STEEL ELECTRIC AIR VALVE 5-GALLON 8 PORT AIR TANK HORNBLASTERS 1NM STEALTH BLACK AIR COMPRESSOR 110/150 PSI PRESSURE SWITCH W/ 40 AMP RELAY REMOTE MOUNTABLE INTAKE FILTER SPARE AIR FILTER ELEMENTS 10FT OF 5/16″ D.O.T. APPROVED AIR LINE 17FT OF 1/2″ D.O.T. APPROVED AIR LINE 6 FT OF 3/8″ AIR LINE (FOR AIR COMPRESSORS AIR INTAKE) HORNBLASTERS 200 PSI STAINLESS STEEL LIQUID-FILLED AIR GAUGE 22FT OF 10-GAUGE RED WIRE 22FT OF 18-GAUGE BLUE WIRE 22FT OF 18-GAUGE GREY WIRE COMPLETE WIRING KIT WITH FUSE HOLDER & FUSES BRASS NPT FITTING KIT WITH SAFETY BLOWOFF & DRAIN COCK MOUNTING HARDWARE AIR LINE CUTTER DETAILED INSTRUCTIONS EARPLUGS