Stainless Steel 90 Degree Angled 02 SENSOR EXTENSION ADAPTER With 400 Cell MINI CAT built in . Adjustable.

M18 x 1.5mm Threads - this covers 99% of O2 Threads but check yours to be sure.
Are you having Engine check light issues because you have deleted or using a HIFLOW Cat ? This could be your Answer ..

NOTE: There is NO guarantee that this will alleviate your O2 sensor CEL light .

On ODB-II vehicles (96+), the ECU has two O2 sensors for diagnostic purposes. The first O2 sensor is located before the Catalytic Converter. This O2 sensor is responsible for all the Air/Fuel tuning and is imperative to the operation of the vehicle.

The second O2 sensor is located after the Catalytic Converter. The whole purpose of this O2 sensor is to ensure that there is a functioning catalytic converter in the system. The way it can detect this is to make sure that there is a difference in exhaust gasses between the first O2 sensor and the second. If the same exhaust reading is detected, then the ECU knows that there is either a damaged Catalytic Converter or no Catalytic Converter at all.

This mechanical O2 fix is basically a way to space out the O2 sensor so that it still reads SOME exhaust gasses but it removes the O2 sensor from the direct flow of the gasses as to make the ECU believe there is a restriction in the exhaust gasses such as by a Catalyst.
There is NO GUARANTEE that this product will work on your specific application. There are always mixed results depending upon the layout of the exhaust system and the tuning of the ECU, however, this mechanical O2 fix is well known for eliminating most CEL s caused by an O2 Sensor.

** Exhaust pipe not included