M18 x 1.5 O2 Sensor Bung - Saddled for 1.500"-2.500" OD Tube - 304 Stainless

304 STAINLESS STEEL O2 SENSOR BUNG — M18 X 1.5 THREAD The Ace Race Parts brand of metric Oxygen (O2) Sensor Bungs is precision machined using solid 304 Stainless Steel bar stock and work with all standard O2 Sensors that use a M18 x 1.5 thread. This specific O2 sensor bung fitting is coped to fit 1.500" OD to 2.500" OD tubing; however, it can easily work with other tube and even pipe size diameters. Our O2 sensor bungs and bung plugs are high quality 304 stainless steel options for custom exhausts, downpipes, and OEM repair fabrication projects.