The O2 Sensor Extender is used on each of the oxygen sensor(s) located BEFORE the catalytic converter(s).

On V6 & V8 engines there’s could be 2 catalytic converters; on 4 cyls engines there’s usually only one. Locate the 02 sensor(s) before the catalytic converter(s) and remove them.

This extender stands-off the O2 sensor by 3/4" from its normal position. Thus the sensor is made less sensitive to the increased level of oxygen in the exhaust resulting from the burning of supplemental (HHO) gas.

This is the very best isolator extender on the market because it seals much better than the cheaper tapered type. The sealing metal gasket is the same sealing method used on the oxygen sensor so there’s no leaks which could cause false reading to the computer.

DO NOT OVER TIGHTEN THE EXTENDER.

Tighten it until the sealing washer is just crushed and then stop. It is recommended to lubricate the threaded areas with anti-seize compound.

DO NOT GET ANTI-SEIZE ON THE O2 SENSOR.

This extender works best with new 02 sensors. It is possible that your check engine light might come on if you re-use old 02 sensors. If this is the case, you may need to use an EFIE to lean out the 02 sensors instead of this device.

This device is experimental as with all hydrogen related enhancers and parts and thus there’s no guaranty as to it’s workability on your specific engine/computer ECM. The isolator extender only works on threaded 02 sensors and not flanged type. Once installed the kit is not returnable. It is not warranted against breakage and clearance may vary on your model vehicle and the area may need to be altered for clearance if it contacts the floorboard or other obstructions.