Material: SS304 + Stainless Steel Filter Mesh Thread: M18*1.5 Name:Oxygen Sensor Adapter Features 1.100% brand new and high quality . 2.Made of high quality material, durable and practical to use. 3. The interior is reserved for the installation of mini three-way catalytic conversion material, which, in the case of placing the converter, can help you get rid of the annoying check engine light after modifying the exhaust or removing the three-way catalytic converter, and sometimes even after installing a high-flow three-way catalytic converter. 4.When you remove your catalytic converter, your post O2 sensor will see higher temperatures and greater flow of un-burnt fuel. 5.As a result this will throw check engine lights (Cel, SES, DTC) typically the error codes will be P0420 (Catalyst System Efficiency Below Threshold Bank 1) and/or P0430 P0420 - Catalyst System Efficiency Below Threshold Bank 2). Fit for OFF ROAD only. Size chart Thread: M18*1.5 Package included 5*Oxygen Sensor Adapters Notes: 1. 1 inch = 2.54 cm 2. Please measure it yourself to choose the right size. 3. Due to the difference between the different displays, the picture may not reflect the actual color of the item. Thank you! PENUMG QAZ-1895 Oxygen Sensor for Universal Cars