Wolo 840 Turbo Compressor and Extended Tank System
Wolo 840 Turbo Compressor and Extended Tank System


The Wolo 840 is a simple two-piece air system consisting of a 5.5L elongated steel tank with a built-in pressure switch and a 12V supercharger producing 2.03 CFM. The Model 840 is designed to operate a Wolo train horn or any high-pressure horn that requires an onboard high-pressure pneumatic system, and a three-stage horn beeps for 10 seconds. The turbocharger features a heavy-duty permanent magnet balanced motor with heavy-duty rubber bushings on the mount that virtually eliminates all vibration, and the tank has a built-in 110 psi pressure switch. The 840 comes with a 20-foot coil hose with brass fittings for inflating shock absorbers, floats, or any other application that requires air (not recommended for tire inflation). Kit includes: mounting hardware, 20' coiled inflator hose, 10' 1/4" high pressure flexible air hose, brass fittings, and installation instructions in English and Spanish.


  • Simple 2-Piece Air System with Extended Steel Tank, 5.5L with Integrated Pressure Switch and Compressor Outlet 12V 2.03CFM
  • Designed to operate a Wolos train horn or high-pressure horn requiring a high-pressure pneumatic system on board, a three-stage horn beeps for 10 seconds
  • The turbocharger features a heavy-duty permanent magnet motor with heavy-duty rubber bushings on the underside to eliminate virtually all vibrations and the tank features a built-in pressure switch to maintain 110psi.
  • Comes with a 20ft coil inflator hose with brass fittings for inflating shock absorbers, rafts, or any other application that requires air (not recommended for tire inflation).
  • Kit includes: mounting hardware, 20ft, 10ft 1/4" coiled inflatable hose, high pressure flexible air hose, brass fittings, and installation instructions in English and Spanish



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