
Hydrogen combustion enhancement for diesel engines
On-board PEM oxyhydrogen for trucks, buses and generator sets up to 16 L.
HydroHub™ DH-Power (D-900) · single unit
What it does
The DH-Power makes hydrogen-oxygen gas from distilled water. It uses PEM electrolysis, so there is no caustic electrolyte. The gas goes straight into the engine's air intake. Nothing is stored on board.
There are no ECU or fuel-system changes. The unit runs from the vehicle's 12 / 24 V supply. It starts and stops with the engine. The fitting is reversible.
Only three parts to install

- 01The unit
Mounts behind the cab, under the chassis or on a pad.
- 02The water tank
4 L of distilled or deionised water.
- 03The intake line
Carries the gas into the air intake.
The facts

- 900 ml/min output
- Engines up to 16.0 L (diesel, natural gas, LPG)
- 12 / 24 V DC
- 160 W
- 4 L water tank
- Distilled or deionised water only
- 12-month warranty
- Free delivery, duties & taxes paid (DDP), to 48 listed countries — see the Shipping page for the full list.
Fits
A straight answer
Results depend on engine, load and duty cycle, so we don't promise a fuel-saving percentage. Log your fuel use before and after fitting; we'll show you how.
Download the one-page fuel log →Factory build
Factory build
Questions? Talk to us
Ask about fitment, water or delivery. We reply by email or phone.