Features 1、The sensor plug has standard M18 thread, tightly connected, suitable for standard oxygen sensors. 2、Iron electroplated nickel material has good wear resistance and is not easy to corrode. 3、Designed to adding oxygen sensor in any place you need one, great for exhaust installation, headers, down pipes etc. 4、Play the role of welding connection, has good sealing effect, firm clamping, convenient installation and replacement. 5、With compact structure and glossy appearance, will not hurt your hands or damage the sensor accessories during use. Specification Item Type: Thread Plug Material: Iron electroplated nickel Purpose: Play the role of welding connection Color: Silver Package List 1 x Nut 1 x Plug