Mishimoto's M18x1.5 weld-on bung in mild steel provides a durable threaded port for installing sensors and fittings such as boost gauges or wideband O2 sensors. Offered for DIY fabrication, the M18x1.5 size is intended for welding into intake or exhaust systems where a secure, serviceable mounting point is needed, and is part of a family available in multiple materials to suit different applications.
Mishimoto M18x1.5 Weld-On Bung Mild Steel