The S-7
Hydrogen Car Kit

Efficient - Compact - Economical - Quality

High quality hydrogen car kit perfect for
4 & 6 Cylinder Engines up to 4.9 liter engines (4900cc)

Hydrogen Car Kit

Everything you need except distilled water and your KOH for your catayst solution.

Easy To Install

Works On All Engines
(Except Hybrids)

Choices Below Depending On Your Vehicle

OBD1, OBD2 & Carburetor Engines

Hydrogen Water Cars
For OBD2 Vehicles

1996 & Newer

2 Choices For OBD2 Vehicles

VP15 or VP16 Volo Chips

VP15 Chip

volo performance chip
  • Easy Plug N Play
  • V-Link Software
  • Program For Any Vehicle
  • Please Click Here To Read More about Volo Chip VP15...

  • S-7 Hydrogen Car Kit with VP15 Chip


    VP16 Chip

    volo performance chip
    • Touch Screen Windshield Mount
    • V-Link Software
    • Customizable
    • Diagnostic Tools
    • Please Click Here To Read More About Volo Chip VP16...

    • S-7 Hydrogen Car Kit with VP16 Chip


      Hydrogen Water Cars

      S-7 Hydrogen Kit

      For Carburetor Engines


      Hydrogen Water Cars

      S-7 Hydrogen Kit with EFIE MAP Combo

      For OBD1 Vehicles
      1995 & Older
      efie map combo

      Please let us know your Year, Make & Model so we can send wideband or narrowband for your oxygen sensors.

      We also have an option for diesels. If you have any questions please send us an email to

      S-7 Hydrogen Generator Kit with EFIE MAP Combo


      Hydrogen Water Cars

      The HHO Generator

      Housing is made from 3/4" marine grade Starboard polyethylene which will last a lifetime under normal usage. There are 7 plates made of 316L stainless steel.

      Produces up to 2 LPM. The amp efficiency calculation of this generator is 13 amps for 1 LPM.
      Hydrogen Car Kit

      Mounting brackets attached making installation easy. The mounting tabs are included in the dimensions: 7" x 7" x 4"

      Comes with custom HHO dryer that is approximately 6" tall, it is installed right before your air intake.

      This hydrogen car kit comes with easy to read instructions and colorful diagrams, and of course we are here to offer you technical support by email or phone (if needed).

      Important: The S-7 HHO kit only works on 12 volt vehicles. If you have a 24 volt vehicle (mainly overseas customers) you will require the D-7 Hydrogen Kit.

      HHO PWM and LCD Controller

      More Than Just A Pulse Width Modulator

      hho pwm
      Top notch electronics is one of the many reasons why are are kits are A+.

      The digital display is installed in the cab of your vehicle.

      Where you can control your entire hydrogen on demand system.

      From this remote display you will have a continuous read out to see:

      • Amps
      • Voltage
      • Duty Cycle
      • Frequency

      A switch on the LCD display allows you to turn the hydrogen generator off.

      It also has a safety shut-off with 2 ways to detect when the engine isn't running shutting the HHO system down.
      This is a very important safety feature that should never be over-looked.
      hho pwm

      The HHO PWM will allow you to have control over the maximum current that you want to run for best gas mileage performance.

      This is a constant current PWM which is almost certainly one of the most vital jobs a Pulse Width Modulator performs. The majority of PWMs sold with other hydrogen kits are not constant current.

      The PWM simply mounts under your hood.

      Please see our PWM HHO page to see videos on LCD Functions and to learn more about PWMs.

      Hydrogen Water Cars
      Freezing Point Hydrogen Generator

      Our Hydrogen Car Kit Will Not Freeze

      Because of our design and electronics, our hydrogen generators will not freeze up to minus 54 Degrees Fahrenheit or -47 Celsius.
      Please visit our Hydrogen Generator Catalyst page for more information and video on mixing your catalyst.

      Choices For HHO Computer Enhancement

      If your vehicle is fuel injected and has a computer you will need enhancement to see an increase in MPG.

      Please see hydrogen car conversion to understand this better.

      Carburetor engines will not need any enhancement.

      Hydrogen Water Cars

      The S - 7
      What's In Your Hydrogen Car Kit?

      • The S - 7 Cell
      • HHO PWM with LCD Controller
      • 1.5 Quart Reservoir Tank (1.4 Liters)
      • Finger Grip Nylon Reservoir Cap
      • HHO Dryer
      • 12' Reinforced Heavy Duty Fuel Hose 3/8"
      • Barbed Elbow For Air Intake 1/4" NPT
      • Drain Valve
      • 12' of Red Automotive Wire
      • 12' of Black Automotive Wire
      • Electrical Kit: Connectors, Circuit Breaker etc.
      • Mounting screws for all Components
      • Easy To Understand Installation Instructions

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