This is our Hydro Cell Oxygen Sensor Extender for your car or truck, used in newer vehicles to turn off your SES (service engine soon) light , or CEL (check engine light). When using a hydrogen kit, too much oxygen will be sent into the exhaust and thereby causing the ECM (Electronic Control Module) to go into its default cycle, dumping loads of gasoline into the engine and ruining any attempt to increase fuel economy by the use of Hydrogen.

The "Hydro Cell Oxygen Sensor Extender" solves all of these problems by simply removing the sensor from the direct flow of exhaust gases.

You simply add the Hydro Cell Oxygen Sensor Extender to your cars original Oxygen Sensor and reinstall them back into the exhaust pipe. That's it.