ℑSafe Material: Oxygen sensor extender is made of steel. It has a slippy cover without sharp edges. And it is wear-resistant, -resistant, and not easy to break. ℑRepeatability of Wire: O2 sensor spacer has perfect accuracy and wire repeatability. Check the engine light, repair the M18 x 1.5 sensor leakage, and solve the P0420/P0042 code error. ℑSpin 45: O2 sensor bung is 45 adjustable, and the interior has more space, both O2 reading and air degreasing effect are better. It is full of creativity and meets your needs. ℑ Catalytic Converter: A micro catalytic converter is built into the O2 sensor spacer extender. It is not necessary to check the engine lights after retrofitting the exhaust or removing the catalytic converter. ℑSimple to Assemble: Oxygen sensor spacer is convenient to install and demount. The old or damaged parts can be replaced directly to obtain higher strength.