The D-7
Hydrogen Kit

The D-7 Hydrogen Kit is built for 5 to 7.9 liter engine sizes.
Ideal for 8 and 10 cylinder engines.



Hydrogen Kit Buy Now
D-7 Hydrogen Kit
$635.00

No Enhancement - For Non Fuel Injected (Carburetor Engines)
Buy Now
D-7 Kit FS2 HHO Chip BUNDLE
$710.00

OBDll Fuel Injected Vehicles


Buy Now
D-7 Kit
with EFIE BUNDLE
$680.00

OBD1 Fuel Injected Vehicles (ususally 1996 and older)
Buy Now
D-7 Kit
with UNIVERSAL MAP/MAF SENSOR ENHANCER BUNDLE
$680.00

OBD1 Fuel Injected Vehicles
(ususally 1996 and older)


Rugged housing is built from 3/4" marine grade Starboard polyethylene, this is a much better choice than acrylic or ABS.

13 316L stainless steel plates.

Produces up to 3 LPM. The amp efficiency calculation of this generator is 12 amps for 1 LPM.
Hydrogen Kit

Mounting brackets attached making installation easy.

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

Dimensions 7" x 7" x 5" The five inch depth includes the mounting brackets.

Please Note: Your hydrogen generator catalyst (potassium hydroxide) is only shipped with UPS Ground orders , it cannot be shipped by air.

HHO PWM and LCD Controller

More Than Just A Pulse Width Modulator


hho pwm

Our top notch electronics is one of the many reasons why are are kits are A+.

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

From your digital display 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 the LCD Function Videos and learn more about PWMs.

    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 miles per gallon.

    Please see hydrogen car conversion to understand this better.

    Carburetor engines will not need any enhancement.

    FS2 HHO Chip

    Volo hho chip

    The easiest route is to install a FS2 HHO chip made especially to go with hydrogen generators.

    This plugs into your vehicle's computer from inside the cab, your OBDII port (usually near your steering column).

    This is a set it and forget it way to go. With this option you will not need any other enhancement.

    This HHO chip is programmed for your specific vehicle by year, make and model. If you ever decide to use it on another vehicle, we can reprogram it for $25.

    Please click here to learn more about the FS2 HHO Chip


    The D-7 Bundle
    D-7 Hydrogen Generator Kit
    and FS2 HHO Chip
    Buy Now
    $710.00

    MAP Sensor Enhancer or EFIE

    For vehicles with OBDI Computers (older than 1996) you have 3 options:

    1 - A MAP Sensor Enhancer or MAF

    2 - An EFIE

    3 - Both a MAP/MAF Sensor Enhancer and EFIE

    Please read hydrogen car conversion or contact us for more information.

    Hydrogen Water Cars

    The D-7
    What's In Your Hydrogen Kit?

  • The D-7 Cell
  • HHO PWM with LCD Display Controller
  • 1.5 Quart Reservoir Tank
  • 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 D-7 Cell, PWM and LCD Display
  • Easy To Understand Installation Instructions











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